would you give up harper and Rendon, plus hood for him?
not a fair comparison, a single starting pitcher is less critical to the overall success of the team than a QB. The stats show you need a top 10 QB to win a SB (with a few rare exceptions).
Last 5 SBs:
12: Eli vs. Brady
11: Rodgers vs. Ben
10: Brees vs. Peyton
09: Ben vs. Warner
08: Eli vs. Brady
Yeah, there is the occasional Grossman that gets to the big game, but those are few and far between.