From
http://www.ridemedia.com.au/past-issue/lance-vs-cadel-a-study-of-two-22-year-olds/
Based only on eye judgement, if 22-23y Froome was >80 , the 2013 TdF Froome with a weight -5 to -8 kg (only looking at pictures) could indeed score one of the highest VO2 max ever read.
P.S. i still think...