OldSchoolNoBull wrote:Disappointed at Nash ending up above Barkley.  Both phenomenal players but I still feel like Barkley is not getting enough credit.  And Barkley was a more impactful player than Melo ever was.
People make the argument that Nash made a terrible team great and Barkley joined a team that was already good, but as I illustrated before, there was a bigger gap between Barkley and the next highest guys on his team in BPM and WS/48 than there was for Nash on his team.  I do not know much stock anyone puts in PIPM or RAPTOR - perhaps not much - but I'm just putting this out there(obviously RAPM doesn't exist for 93 Barkley):
93 Barkley: 5.76PIPM
05 Nash: 3.69 PIPM
07 Nash: 4.36 PIPM
Defensively:
93 Barkley: 1.13 DPIPM
05 Nash: -1.78 DPIPM
07 Nash: -0.9 DPIPM
RAPTOR:
93 Barkley: 7.2 RS RAPTOR/7.0 PS RAPTOR
05 Nash: 5.6 RS RAPTOR/6.5 PS RAPTOR
07 Nash: 6.5 RS RAPTOR/5.1 PS RAPTOR
Defensively:
93 Barkley: 1.6 RS D-RAPTOR/1.8 PS D-RAPTOR
05 Nash: -1.5 RS D-RAPTOR / -1.8 PS D-RAPTOR
07 Nash: -1.1 RS D-RAPTOR / -1.9 PS D-RAPTOR
Obviously numbers don't always tell the whole story, but felt like it was worth sharing this.
Understandable perspective, and appreciate your tone. Here's what I'll say:
We don't have actual +/- data from Barkley's '92-93 season (to my knowledge), so all the stats you're referring to are based on stats that try to approximate +/- data with the box score, and this is something that tends to underrate players underrated by the box score.
Here's what data we do have that pertains to Barkley.
1. As luck would have it, the 76ers were the first franchise that we have on record 
tracking their team's raw +/- data. While this is nowhere near as powerful as having a more complete dataset (and we only have regular season data), we can get something of a sense for Barkley looking at his data here.
'84-85 On: +4.8 On/Off: +1.9, 5th on team in Total +/- (Malone 1st)
'85-86 On: +5.0 On/Off: +10.6, 2nd (Cheeks 1st)
'86-87 On: +2.3 On/Off: +7.9, 1st
'87-88 On: -0.9 On/Off: +2.7, n/a (negative)
'88-89 On: +3.9 On/Off: +11.0, 1st
'89-90 On: +7.0 On/Off: +8.3, 1st
'90-91 On: +3.1 On/Off: +8.8, 1st
'91-92 On: +0.3 On/Off: +6.0, 4th (Bol 1st)
Total On: +3.2 On/Off+6.82. In addition to bkref now going back to '96-97, we also have (regular season data) from
'93-94 to '95-96 with at least numbers such as the ones above for all teams, which means we can see what Barkley's numbers look like for those year:
'93-94 On: +7.8 On/Off: +6.8, 2nd (KJ)
'94-95 On: +6.7 On/Off: +6.8, 1st
'95-96 On: +3.0 On/Off: +7.8, 2nd (KJ)
(There's also Barkley's Houston years which can be found on bkref, feel free to post further about them, they say good things about Barkley as well.)
3. I'll note that I've been trying to get a gauge of how well Barkley & KJ successfully harmonized. We are talking about a team who was already scoring at a 112-113 ORtg clip for 4 years prior to Barkley's arrival and that the team only broke 114 once during '94-95, so I think it's important to recognize that this team was great before Barkley and really didn't rise up that much with him. 
4. Bringing this back to the +/- data, I'd be surprised if Barkley's numbers in '92-93 looked drastically more impressive than his other years given that the Suns weren't in fact much better in '92-93 than those other years.
Barkley seems like the kind of guy who tended to have number like the ones you see above.
5. Now, how does Nash look in Phoenix? (Note using bkref's team page for the first two, but RS/PS combined for Total
'04-05 On: +12.7 On/Off: +14.9, 1st
'05-06 On: +8.7 On/Off: +9.1, 1st
'06-07 On: +11.5 On/Off: +11.7, 2nd (Marion)
'07-08 On: +10.0 On/Off: +14.5, 1st
'08-09 On: +4.6 On/Off: +6.9, 1st
'09-10 On: +6.7 On/Off: +3.9, 1st
'10-11 On: +4.7 On/Off: +14.9, 1st
'11-12 On: +3.6 On/Off: +10.6, 1st
Phoenix Average (weighed down some by his 1st stint on the club)
On: +7.5 On/Off +9.7
I hope it's clear why I just see Nash during this run as someone who just seemed to have more net impact than Barkley. While it may be the case that '92-93 turned out to be something entirely different from the rest - because we don't have that data - my best estimation is that the trend would continue into that year as well.
6. I want to acknowledge that +/- style impact is not the only way to look at the game. If you simply thought Barkley could hang better against more elite competition deep in the playoffs, that alone would be enough to justify ranking him higher than Nash.
But in practice, I don't see any evidence of Barkley leading fundamentally better teams than Nash, and I think Nash was helping you more day-in and day-out.