Offensively, Morse was better than Upton last year.
Not really. They were pretty close, and I think overall Upton was better. Morse's BA and SLG was a touch higher, Upton's OBP was better. Upton crushed Morse in WAR because of the massive defensive disparity. Upton is a plus RF, Morse was an average-at-best 1b. Good enough for a two-win difference.
And really, to quote MDS, "who gives a rat's ass." Morse is 30. Upton is 24. Who do you think will be better for the next 5-7 years?