Where is ANYONE in this thread saying defense doesn't matter?
Of course it matters. Doesn't change the fact an elite QB is much more vital to a teams success than an elite MLB. How did San Fran do until they got competent QB play? Or Chicago with Urlacher? Or Washington with Fletcher (albeit he was never elite)? Or Arizona this past season with Daryl Washington? Etc.?
Nobody is saying defense is irrelevant. Merely that QB is a lot more important. And they are right.
I always question individual position judgment questions in the context of a team sport, especially at the pro level.
Say you have a great QB? Cool. Stick him with mediocre receivers, a lousy offensive line and crummy backs and congrats, you have Archie Manning.
I don't see this discussion as much different than the ones where people ask if you'd rather have great covers or dominant pass rushers. You need both.
If it's discussion for the heck of it, fine, but it's not very realistic.