Thanks Leo.
I Eat Sub gained 1,152,182 xp
According to the hiscores Public Image's Woodcutting xp is at 2,699,285 - producing a gain of 139,317 xp
Northener's Woodcutting xp is at 11,105,719 - producing a gain of 100 xp
I Eat Sub is the winner!
Full results can be found in the first post.