Do you watch every game of each of these players? Is it not possible that you are mostly seeing highlights of other players that present them favorably? Just because Orakpo isn't sacking the QB on the last play of the game doesn't make it any less important. Every play is a scoring opportunity and every sack, holding penalty, and pressure that leads to an incompletion or interception prevents that opportunity.
Here is another stat for you. Orakpo was the most held player in 2010 and tied for second in 2011. These aren't "should have been" holds that ES loves to complain about. These are real holding penalties.
Are these not valuable as well?
http://www.footballoutsiders.com/ext...ing-flags-2011