So I got looking at David Ortiz's Baseball Reference page, and two things jumped out at me.
First, take a look at some of his seven-year trends:
2001: .324 OBP/106 OPS+
Amazingly consistent improvement. 5 consecutive top-five MVP finishes.
Secondly, after consecutive years of Mo Vaughn being his Most Similar Player By Age, Carlos Delgado was his most similar at age 31. That's a frightening trend. Actually, Delgado remained productive through age 34 and is now coming off his worst season as a pro, at age 36. So I guess it's better to have been more similar to Delgado than to continue to follow Mo Vaughn's career trajectory.