If we are talking about WR's in general, even if suspected of being dirty, I'd say Wang Junxia's 8:06 3k, a day after she ran 8:11 I think, that's crazy, hands down best WR
Hellen Obiri set a KENYAN nation record last year at 8:21, Genzebe Dibaba is in the shape of her life and only managed a 8:16
I'd have to say Bekele's 12:37 is impressive on the men's side, better than Komen's 7:20, think of it like this... That's back to back 3:40's, the 1500m WR is 3:26, most 1500m-3k types are able to pull 1500m+12-13sx2 which would put the 3k max record at 7:16-7:18, Hicham El G could run 12:47 in the 5k, I see no reason why he couldn't go 7:17-7:18 all out... Plus 12:37 5k is 3x4:01 1600m's, 4:01 1600m converts to 3:44, a near 4 seconds off what Komen could do at 1500m back to back...
As far as percentages go, it seems Bolt's 100m WR might be the most outstanding... Relative to the next best 100m AT, he has very comfortable gap