Most teams would be able to withstand the loss their best player 1 hour before game time - not having prepped without him all week. Oh, and most teams would be able to handle that loss in addition to losing the number 2 WR. Oh and most teams would be able to do it on the road against one of the best teams in the game.
Having said all that - Stafford certainly didn't play BAD without his 2 wide receivers. Though I certainly wouldn't say he played good either. If he had a week of preparation I would imagine his would perform much better.
Oh well. I guess he just sucks!