No, the F3 is a bit pokier but they aren't that far different.
Edit - top trumps anyone?
RB199-34R 101 (GR1) dry power 3,650kg/8,090lb reheat 7,253kg/15,950lb
RB199-34R 103 (GR4) dry power 4,380kg/9,656lb reheat 7,675kg/16,920lb
RB199-34R 104 (F3) dry power 4,079kg/9,000lb reheat 7,706kg/17,000lb
Nerd Alert