I agree with that a bit, but when your run is so short, it's really tough to make that claim.
So here's Clyde's guys his 1st year:
Hilton Armstrong FR C
Justin Brown SR C
Mike Hayes SR F
Scott Hazelton SO F
Emeka Okafor SO C
Marcus White FR F
Hilton, Brown, Hazelton and Hayes didn't get appreciably better. Marcus White it was tough to tell, as he didn't get the PT earlier in the year. I'd say he did improve. Okafor is Okafor; a special player. He got better every year, and the credit for some of his improvement should go to Clyde.
Here's Clydes guys his 2nd year:
Hilton Armstrong SO C
Josh Boone FR C
Emeka Okafor JR C
Charlie Villanueva FR F
Marcus White SO F
Again, Hilton didn't get appreciably better this year. Marcus White it was tough to tell, as he didn't get the PT earlier in the year. I'd say he did improve. But Hilton didn't blow up until Sr year, 2 years after Clyde was gone. Which gives more weight to other coaches on the staff, unless you believe Clyde's coaching magically carried players through their careers [false obviously--see Josh Boone below].
Marcus looked maybe a little better, but injuries marred his development, and he end up transferring out. That can't be counted as a win.
Boone looked good and definitely improved. And he was stagnant after Clyde left, so this might be Clyde's strongest argument.
Charlie V was a top 2 player coming in, and was pretty much studly from the get go, minus some freshman bumps in the road.
Okafor blew up this year. But again, Okafor is Okafor; a special player. He got better every year, and the credit for some of his improvement should go to Clyde. Giving all the credit to Clyde is like giving one of the coaches all the credit for Kemba or Shabazz. Those guys were special, special players, who'd likely develop a lot under any decent coach.
Ultimately, Elite players makes coaches look good.
JMO