It's not even debatable, guys. I was not the biggest Pearl fan in the world, full disclosure. The bottom line is sometimes you would watch games that Pearl coached and just wonder what they did in practice, because there was no cohesion at all on the floor.
Two years ago we went to the final four because Brian Williams played out of his mind, and Prince actually played defense (half due to his length). After Pearl's first two years, he did nothing but go downhill.
You can watch a Martin coached team for 10 minutes and it is not even up for debate that Pearl can't touch Martin in coaching.
And to add to what LawVol has already spoken about, what was sad about Pearl's decline was that he recruited the kids who he could not get to play well together. Period. He tried to pull a Calipari and just put good players on the court, then give them minimal direction. Problem is Cal gets the best of the best, so it pans out.