Off the top of my head without breaking it all down, 6-7ish?
I'm watchin that video you posted, the first two minutes are him talking, another minute calling out plays at the line, then some nice throws, along with a throw that a viking player dropped, which hit his receivers leg, and then ankle, and then head, before he caught it, laying down, TD Favre.
I like the guy, he was certainly fun and entertaining, but I never saw him approaching GOAT status. His MVP's remind me a lot of the Nash MVP's, not that he wasn't great, but that the media loved him and his narrative moreso than how "valuable" he was.
You couldn't prove to me that Favre was more VALUABLE than Reggie White on that roster, but Reggie doesn't get the numbers, or the smiles and jumping around after TD's that Brett does, therefore, one is MVP, the other is merely a HOFer and that's it. I don't put a lot of value in big smiles and high fives with Warren Sapp, etc.
Shred me, go on ahead everyone.