I meant in their efforts on the defensive end. They both seem to lack the motivation to play hard-nosed defense, where someone like Dudley likes to go body-to-body and Hedo and Frye would rather not take a hit. But yes, Frye has a bigger wingspan and has shown glimpses of his ability to rebound the ball.
Didn't you see all the flagrants Frye picked up this year? He led the team in the regular season, I believe, and definitely in the playoffs. Frye's meaner than you think. He played good D on Duncan. He's not a classic banger because he doesn't have the frame for it. It doesn't mean he isn't aggressive or doesn't play hard. In terms of defensive impact, he was no different than the larger, heavier Lopez.
Frye's defense is underrated. That's not to say it's good, merely that it is about average, and not awful as some people seem to believe.