Looking at it now it is very hard to tell really,
Porte is in his first grand tour and is still young so the final week will surely be to much
Arroyo well he appears to be on good form and i highly doubt he would usually lose over 7 and a half minutes or so but.....
Sastre should ride into form and we all know the last week is perfect for him so in theory he is now in the driving seat from now on in, when he turns on the style on a mountain the two above will surely be shown to not be in the same league, he did gain 2 seconds on arroyo today wich is admittedly tiny but he still dropped Arroyo and Wiggins
Between Arroyo and Sastre i think i cant tell and it really depends on how arroyo deals with the pressure of probably being in pink after Zoncolan
With that in mind Tondo is about 2 behind Arroyo i would say he is in the form of his life and so we will have to see but he is unproven in the 3rd week of a gt
Its a really tough call for Cervelo probably will try and play both cards
Wiggins will never gain time on Sastre on a final week parcours like that and so i believe he will simply slip, 20% just isnt wiggins at all
Vino Evans et al really hard to know but i cant see any of these taking the 10 or so out of Arroyo or 3 out of Sastre
The race is probably going to become incredibly hard now with stages like Monte Grappa featuring many attacks, possibly early attacks as well, i think Sastre can just go with these if his form has recovered, Tondo at the moment certainly can but people like Arroyo and Porte must not get carried away they must be prepared to not exceed their limits and simply control their losses
For me, its to hard to call but i think its between Arroyo, Tondo and Sastre