Super nitpicky, and I have no love for the Lions, but I don't think you can call them "elite." Damn good football team, to be sure. But they are what, 2-2 in the postseason under Campbell, I think? Lost to a rookie Qb at home last year. Not elite. KC was elite, may still be we will see how this year goes, very banged up at WR. Eagles are elite. I think you need to win it to earn that title.
Goff is a solid QB but he will always be the sum of his parts. He cooks off of play action and is accurate, but he is supported by the best running back tandem in the NFL and very solid WRs. Detroit is the perfect system for him, but Goff is not Stafford.
Stafford, pound for pound, might go down as one of the most underrated QBs to ever win a SB. It amazes me he still doesn't get the respect he deserves, and, ironically, that's probably because he spent a large chunk of his career on mediocre Lions teams and didn't get the attention he deserved. Dude has so much arm talent it's not even funny. Master of the no-look pass.
I think the trade was very even, I'll give the slight edge to Rams. LAR gave up way more but they won the Bowl and are still perennial contenders. Lions are still chasing the elusive first SB.