hmm i still dont know about that...

if a 100 minute guy saves 1% energy over a 100 minute TT he finishes in 99 minutes.

if 95 minute guy saves even just 1.1% he saves 1.04 minutes

i'm not using real savings percent, but the point is that the faster you go, the greater % of savings a purely aero efficiency will give you, which means you still save more time by going faster.

i think.