I think his career will go similar to Elway's. Different game back then and Elway didn't run for TDs like Allen does. But during his era Elway was a QB who was known to run if he had to extend the play or avoid the rush. But as he got older, he was basically a pocket passer at that point in his career. Of course, it didn't hurt that he had Davis to hand the ball off too. I expect Allen will run less and less as the years go by. Just like Elway did.