To my eyes that position looks a like a black win. Two connected passed pawns supported by rooks on the correct file (ok the b rook might get in the way at some point, but i can't see that being a specific problem). Also, and probably more importantly, white has no counter play whatsoever. e5 ..fxe5 fxe5 ..Nxe5 just improves blacks knight, what did you see in the white position that made you go for a draw?