Manny was better in the field last year, but his UZR/150 looks to be a bit of an outlier. And as you said, he's clearly a better hitter. I don't really think it's even that close. If I'm an NL team like the Dodgers, I'd rather have Manny for 1-2 years than Dunn for 3-4 years. Even though Dunn will get less money for more years, I think I'd rather not be committed to a guy when he's already suited for the AL, and is most likely gonna be more of a sieve with each passing year. The Dodgers also have a pretty balanced lineup with Loney, Ethier, Dewitt, and Furcal hitting LH/SH, so I think the advantage of Dunn's LHness isn't that huge.