Your 12 year old son didn't just lose the SB on an internationally televised stage, the biggest in professional sports & 1 less than stellar decision to walk off a post press conference Q & A session & a series of boastful assertions up to the San Francisco game, doesn't mean that Cam Newton won't emerge a better person & QB in say 6-8 months.
Rings do not make a GOAT. Those are won by teams. There is no answer to who is the GOAT. If in your mind Brady is the GOAT that is due to being narrow minded and overlooking what winning a ring is all about. Take away 2 of those rings from Brady due to the field goals kicked by Vinny and he just has two. You see, it's all perception.