I have decided the Watson trade is officially worse than the Herschel Walker trade. Consider the following:
-The Vikings didn't have to give Herschel Walker a contract extension to trade for him
-The trade happened pre-salary cap, so it couldn't fuck the rest of their prospects
-Walker wasn't suspended for more than half of his first season with the Vikings and had decent (if below his standards) production when joining the team
-Walker didn't come down with a season-ending injury by week 11 1991.
-To say nothing of the fact that trading for Walker didn't immediately bring a PR shit storm to Minnesota.
They may have given up way more draft capital, and there's always that seething resentment that you fueled an NFL dynasty by being hoodwinked into a bad trade, but I think the above outweighs that.