I'm pretty sure it's also not true. I tallied up fumble stats to compare the two and Martinez was way worse. If I still had the data, I'd post it, but I lost it when my hard drive crashed 2 months ago. The only way to get Crouch's fumble numbers was to go through the play-by-play for each game back then. It took a couple hours so I'm not going to do it again.
Also, I don't recall Crouch leading the nation for 3 straight years in fumbles for QBs as TMart has. Throw Crouch in a read-option offense and his fumbles are cut in half easy.