Sure looks awfully similar to me. The only thing I see right away that raises some doubt is the G4 on his right side. In the top photo it appears straight and in the bottom photo it has a definite hook to it. Although camera angles can play tricks on you and everything else seems to match up identically. I would say chances are that it's the same buck, but you just never know.

EDIT - upon further review the G2 and G3 on his left antler in the to photo really appear to be close to sharing a common base, whereas in the bottom photo they are separated by a pretty good distance. I just don't know what to think.