Dart missed like 6 games this year when he tore his meniscus after playing 1 game against Washington state.
And if your really just wanting a pocket passer who won't run and increase his risk for injury, Dart is not a pocket guy either.
Dart is awesome and all, but I'm just saying, if you're looking for a reason to move on from Jaren in favor of Dart, this is a really weak one.