Polamalu, Reed.....They just don't always have a chance to make a play like a LB does.
That's simply false.
A dominating safety can impact the game more than any defensive position because they can have an equal amount of impact on the run game and the pass game.
LB'ers are liability in the pass game , which is why there are nickel and dime packages to get as many of them off the field as possible on passing downs.