I'm highly surprised (and a bit disappointed) to realize I'm the only one who drove PAL WRs in 2014...

On the PAL side I'd say 12"07 for the same reason (9"13 and 10"31 are still beatable by a few hundreds, and the 5-laps are not maxed at all, even if the tracks don't help for better improvements at all). But I'm 100% convinced the best WRs were driven in NTSC this year.
According to me the most impressive ones would be:
MC1 55"97 (even if that sub, in terms of Sami skills, is "less hard" than the PAL one)
DP1 13"28 (personal feeling, because the cut was huge)
MC2 1'01"90 (because a 1'01" just had to be done... even if 1'00" should happen too)
GV2 57"86 (half a second win on a short track, and a cool sub IMO)
MC4 17"54 (massive cut with a very well performed and hard new strat)
KB2 9"99 (obvious, eh?)
This said it's hard not to vote for the KB2 sub. It's a WR I'd still have been looking after if I had not hit it while being M+ ASR.