I disagree with you. Okoro is so efficient and explosive getting downhill, he reminds me of Corey Maggette in that respect. He's also a beast defensively, a 4 or 5-position defender. Nas Little can barely play.
Little by all advanced metrics was VERY similar to Okoro their respective freshman years. He has a much better frame (Same height and weight but 7'1 wingspan vs 6'8) and tested similar (38.5 vetical with Okoro reportedly at 38).
Okoro is better at attacking the basket, but he is just as poor a shooter as Little was coming out (Arguably worse) and this idea that he is some sort of defensive juggernaut is all based on what people expect not what he has shown.
Little Per 40
21.5 PPG / 10.1 RPG / 1.5 APG / 1.2 SPG / 1.2 BPG
20 PER / .163 WS48 / 2.9 OBPM / 2.2 DBPM / .549 TS / .365 FTR
Okoro Per 40
16.3 PPG / 5.6 RPG / 2.6 APG / 1.2 SPG / 1.1 BPG
19.1 PER / .156 WS48 / 3.7 OBPM / 2.5 DBPM / .587 TS / .551 FTR
I give a slight edge to Okoro because he gets to the FTL so much, but they are very similar players in all other respects. The idea that Okoro is ready to go, while Little fell to the middle 20's as a project, is very odd to me. I just dont see a lotto pick in him. Its 2020, attacking downhill is great but only if you can shoot. Anyone that cant shoot will just get sagged off and the whole offense stutters.
Okoro has tools and a great frame (Other than WS), but he is absolutley a project and I wouldnt expect much from him as a rookie. You dont go from a sub 70% FT and sub 30% 3PT guy to a passable shooter in a single season. He will need to work VERY hard, just like Little, to get his shot good enough to be rotation worthy. Until then he is just a 9th man hustle type year 1-2 IMO.