It's always hard to play against team with Michael Jordan, but I’ll try

CellarDoor wrote:Sloan(20)/Van Lier(20)/Kirk(8)
Jordan(27)/Sloan(8)/Gordon(13)
Pippen(36)/Jordan(12)/Walker
Grant(32)/Woolridge(16)
Gilmore(36)/Chandler(12)
vs Bucks
STARTING FIVE
Abdul-Jabbar (1971) C
Sikma (1989) PF/C
Dandridge (1974) SF/SG
Moncrief (1984) G
Robertson (1971) G
BENCH
Bogut (2010) C
Baker (1994) PF/C
Cummings (1987) PF
Marques (1984) F/G
Pressey (1986) F/G
Redd (2003) SG
Cassell (2003) PG
No doubt that both teams are great defensively but also on offensive end built around arguably two GOAT. You can’t stop Jordan, but also you can’t stop KAJ. The only thing both teams could do is try to slow down opposite GOAT, make him work very hard on every possession. And I think that Bucks have better players to challenge MJ than Bulls to challenge KAJ.
1. Bucks perimeter players: Roberston, Moncrief, Dandridge, Pressey, Marques, Cassell, Redd.
Of course Cassell or even Big O wouldn’t guard Jordan. But the rest of these players (maybe expect Redd who’s 11th man in rotation) are capable of doing so. Especially Moncrief, who would be on Jordan most of the time. IF he would have problems with fouls (what's doubtful because in season I'm using he was back to back DPOTY and averaged only 2.6 PF in 39 MPG) Bucks have very good defender Pressey (All D 1st Team), above average (in some seasons he made All D Teams) Dandridge and at least solid Marques. So Bucks have men power to put on Jordan. Of course – I’ll repeat this – Jordan can’t be stopped, but I think my Bucks will make him work as hard as possible in Franchise ATL (even in normal ATL Moncrief is probably the best possible defender we could put on Jordan).
2. On the other hand Bulls main concern is Bucks GOAT – Abdul-Jabbar. And Bulls frontcourt isn’t as impressive as Bucks perimeter players: Gilmore, Grant, Chandler and Woolridge.
First, Woolridge is rather SF (6-9, 220, very thin player, in 1985 he played at SF – Bulls PFs that year were Johnson and Greenwood) and he never was known as good defensive player.
Gilmore, Grant and Chandler are of course very good defenders. Especially Gilmore may be big concern for Bucks, because KAJ have problems with strong players – Lanier is the best example. But this whole thing is little overblown. I can’t’ check how KAJ was doing against Gilmore but I know how he was doing against similar player (big and strong) only better

– Lakers Wilt Chamberlain. There’s no complete data but for example in 1972 season they meet five times and KAJ averaged 40.4 PPG (to be fair – during their first 11 games KAJ had 26 ppg and 16 RPG, but you know, that include KAJ’s rookie year ). One of this games is a famous game, when Jabbar's 39 points and 20 rebounds led the Bucks to a 120-104 victory on Jan 9, 1972...this ended the Lakers' record 33-game winning streak. That game is available on the Internet (I think even on youtube) so everybody could watch it and that would give some impression how 1971 KAJ vs 1982 Gilmore matchup would look like.
It’s also worth to mention that 1982 Gilmore averaged 3.5 PF in 34 MPG, so if he would have foul trouble against KAJ it would be devastating for Bulls because skinny Chandler (3.4 PF in 27.4 MPG) is no match for KAJ. Grant was very good defender but his 1992 version was definitely too small to defend centers, especially GOAT center.
So my point is – Bucks have men firepower to make Jordan work hard on his points. On the other hand Bulls are weaker in frontcourt and except of foul prone Gilmore they don’t have anybody who could make KAJ work hard.
Well, it’s worth to elaborate. Bulls defensive greatness is built around perimeter players – Jordan and Pippen are two of the very best perimeters defenders ever and also Sloan, Van Lier and Kirk are very good. But Bucks offense is built around KAJ and in the frontcourt Bulls aren’t so good as on the perimeter. Even if Bulls want to press, deny entry passes Bucks have good or very good passers and ballhandlers on every perimeter position. Besides, if you want press Big O he would dribble with back on the defender, just like Magic against quicker guards, so unless you double team him, pressing wouldn’t do much damage to Bucks.
You also can’t double team KAJ. Sikma with his range if obvious reason, but – as I said in my first round writeup – Bucks have very good midrange shooters (look at FT%), so even if Bulls will use Pippen (GREAT help defender) or Jordan to double team KAJ, Bucks have players who will punish Bulls

On the other hand Bulls starting players aren’t good shooters – Jordan is only exception (however in 1991 his three point range was still average at best), but Pippen or Sloan weren’t shooters:
1971 Sloan .715 FT%
1991 Pippen .706 FT% and .309 3P% (but only total 21 3PM and 68 3PA)
1991 Jordan had range (he was very good midrange shooter) but that was still younger and more slashing to the basket version of MJ. So Bulls spacing isn’t too good and for example Bucks player who will guard Sloan would be able to sometimes double team Jordan. Well, in fact Jordan, Pippen and Sloan attacking the basket with Gilmore in the middle – that gives Bucks more defensive opportunities to defend MJ than Bulls have on defending KAJ.
So in short – both our teams are very good defensively, but Bucks are better suited to defend against perimeter players (so against main offensive Bulls options) than Bulls against frontcourt (so Bucks main offensive options). That’s why I think Bucks would win that very interesting matchup.
At the end I want to comment on one thing CellarDoor said
I don’t know why you put Baker here who is Bucks 12th man in rotation

BTW, If we want compare our benches:
G and SF
Van Lier, Kirk, Gordon, Walker
vs
Marques, Pressey, Cassell, Redd
PF and C
Woolridge, Chandler
vs
Cummings, Bogut, Baker
So I don’t think Bulls have advantage here. In Bulls best case scenario perimeter bench players are even (however even Chet Walker wasn’t as good as Marques) but Bucks frontcourt is better (I wrote about it above).