People show 'competitiveness' in different ways. Or, they don't show it, but can still have it.
I remember Donnie showing 'fire' many times. But, he wasn't a 'dive on the floor' kinda dude. Chalk that up to being a thin 6'9" dude with a history of injuries, or basic makeup, but a 6'1" guy with one type of personality is going to react differently than a 6'9" guy with a different personality. Doesn't mean they both don't 'want to win.' If the entire team had been better—if he hadn't been expected to be the #1/alpha—i'd bet his attitude wouldn't be called into question so much. Some players are more stoic than others. Stevie Thompson comes to mind. Not a lot of expression. He just killed you with a blank face.