Actually a really good assessment of the Giro so far, but lets wait for a proper mountain stage first. Im thinking that the riders such as Chaves, Zakarin and Majka may be better than what the 2012 had
Visconti was in the breakaway. Amador attacked on the descent of the penultimate climb.
Amador who is high up in the GC dould play a big role in Movistar tactics so they send him up the road forcing other teams to work and possibly take pink with Amador.
Visconti waited for Amador to help him stay away, but Amador tired from the attack and Visconti tired from riding in the breakaway were unable to hold of the bunch which was still rather big.
In the end Valverde sprinted from the group of favourites to gain a few seconds on his GC rivals.
If Valverde would've attacked instead of Amador then all the other GC rivals would've been on his wheel directly. So playing the Amador card was a tactical move which could've been a great move, but in the end didn't work out.