777 wins in WT, especially if the 747 does not have the 'good exit seat config'.
In WTP, I would not care. I like the single seats in the 747 though.
777 in CW: yuck! I avoid it like the plague.
in F I prefer the 747 by a nose hair. However there are no really bad seats on a 777 and on a 747 you can get stuck in those horrible middle seats.