And that's where we disagree. I don't think Watson is a significant enough upgrade in Cleveland over Baker + tons of draft/player capital in order to make them a contender in that conference.
I think the Chargers, Broncos and Chiefs would all still be better than them, I think the Bills would still be better than them, and I think the Bengals and Ravens would be right on par with them. I'd have a hard time putting them as anything higher than the 4th or 5th best team in the Conference with Watson. Like their roster is good, but it's not THAT good.
I think you're also assuming that SB aspirations is like priority 1 in this case. I don't think that's the case at all. I'm not sure that's even on Watson's radar at 26 years old, because most people at that level a) think they're a SB contender wherever they play and b) know they're likely to have a long career, so its long term vs short term.
If Watson's #1 priority were to win a SB in the next couple years, I'm not sure any of the four teams that were on that list are good fits.