So I was thinking about peak Collaros vs. 1992-1994 Dunigan and for me, it's Zach because peak Zach was much more durable and more clutch. Matty had teams good enough to win Grey Cups, but in 1992 the Calgary D owned him and 1993 he had an Achilles tear. Thinking about durability, though -- if you look at games before the 2000s, there was very little official protection for the QBs. Pass rushers would routinely torpedo a QB two or three steps after he delivered the ball, no flag. It's astonishing to see some of the hits that old-school QBs would pop up from. So it's kind of a function of the era that makes Zach more durable ... tho Zach doesn't seek contact like Matty did.