I accept the womens WR is about 30s quicker than it should be, although I think if Radcliffe had had the perfect race in her prime she could have done it....the Munich Euro champs race in better conditions for example.
I had my Vo2 max lab tested as 76 which is pretty high. This doesn't say anything about my economy though, which is pretty poor and consequently only have a 10k pb of 34:08 (although this is probably also due to a lack of 10ks).
You could have a massive VO2 but if you weigh 20 stone are never going to run a fast 10k!