I know you're being flippant, but I'll say it anyway.
I'm concerned with two things - the overall performance, and when the game was within your control with minutes to go what did you do? If Smith was a competent quarterback and managed to complete that easy 4th down walk in touchdown I'd still be saying that was a clutch performance by Luck because he did his job with the go ahead score - Kurt Warner style.
That was the type of performance you would expect from Peyton Manning. Like Manning, Luck is practically a one man show. And in that situation, it's very likely that you will throw a few picks, but still dominate a weaker defence.