Sure it's fair. The Cubs have a hole at 1B, in the lineup, and Dunn was one of the best choices out there to fill it. Now let's see if the Cubs can scrape together production from that position and in the lineup (let's assume he would have hit 3rd or 4th; for clarity's sake we'll look at where Aramis isn't next year between those two slots) that outdoes Dunn. Shouldn't be too hard, what with all of his red flags and age and big fat bank accounts and stuff and junk.