No. First you arbitrarily excluded 2012 to make a point about only missing 1 game on average other than that season. Sure, but while we're at it why don't we just exclude any season where he wasn't in all 16 and say hey, he has been 100% healthy other than those 5 years where he missed some games! What a warrior!
Second, you're generalizing his seasons played, inflating the total years by using the years he was a backup.
Facts are that he's started all 16 games only ONCE in his seven year career, and he wasn't a true starter until year 3, so in 5 years as a starter he's missed about 20%. Not looking as good now is it?
Don't get me wrong, I love Webby, I wanted him here before he was even drafted, and I saw a starter in him from day one when he stood out as the only sure tackler in our secondary as a rookie. But he's also somewhere in the conversation of injury prone and pretending he's not is either stubbornness to the point of going down with the ship or just being a blind homer.