I know Savio's teams are generally a bit dodgy (understatement?), but Rujano's an absolutely massive talent, with a history of being up amongst the world's best going uphill, and at 5"2' and 102-106lbs, he's always going to contend on MTF's, even if his power output's are down on Contador, purely because of the weight advantage.
As for the fitting bike, god, he'd need one the same size than Emma Pooley (Who's also another example of an awesome TINY climber), but as mentioned, i don't think the rules allow it. EDIT: As Jibber points out, 650 wheel are legal. Just don't expect any on neutral service vehicles, so got to go for standard really.
Probably lose a fair bit of efficiently there.
But, i guess we can never rule out Clinic related stuff due to the fact he's going toe to toe with Bertie. But i feel like i believe in Rujano a lot, might be a bit fanboy-ish aas to the reason why, but i just get a sense of him that's it's natural.
I'd be upset if it wasn't.