SU didn't have a "run" in 2013-14. We were eliminated by Dayton in the 2nd round. I assume you meant 2012-2013 when SU made it to the final 4 and lost to Michigan. I checked and Keita did have an outstanding game against Cal and a nice game (3 points, 1 rebound, 3 blocks) against Indiana when Christmas got into foul trouble. Fouled out in only 18 minutes against Marquette. Didn't do much against Michigan in the loss.
I'm not trying to bash Keita. He was a solid player as a backup but I think would have been very similar to PC had he been asked to be a starter. Maybe a little better on offense but he, like PC, had horrible hands.