Hell you could probably make an argument that possibly by next year AD won't even be the best offensive 1B in the NL West.
Paul Goldschmidt is currently at a .376 wOBA and wRC+ of 132 (and this is with an abysmal April where he shared time with Overbay). Obviously he doesn't have the PA's as Gonzalez, but he's walking about 10% for the second straight year and has drastically cut down his K% since his first year (29 to 23). Think it's safe to say he will have more power then AD going forward, and if he continues to show patience and keeps trimming down the K numbers he will be a monster (not to mention he is going to steal 10 bases a year as well). Not going on record that he is better then AD right now, but let's not keep assuming the AD is still a top 5 1B in the entire league (offensively at least)