If you look at the 93 Wheeler vs 97, the 93 Wheeler had better traps.
After Flex's car wreck, he was told by his doctor's to not squat, as the bar apparently put pressure on his neck---which he broke. Now, maybe this could be a reason why he didn't do shrugs as much...I don't know.
Nasser had said that Flex looked like he was 214 instead of 224---Nasser owned himself there, because if Flex really was 214 (1 pound less than when he won his Pro Card), then that meant that Nasser at 280 pounds, lost to a 214 pound bber...
Flex trained with Shawn Ray, and Shawn Ray said that it was amazing seeing Flex transform to someone who was almost "perfect".