Yes, i agree.
Just that Prandelli is also considered to be a coach who knowns how to get the best out of his players, while Montolivo is yet to shine as everyone expects him to. It's hot/cold with him all the time. And Fiorentina is like his second home because he's in Firenze since he was 20. It's there where he grew up as a player, playing under the same coach (who gives him a lot of freedom and who has a lot of trust in him) and with the same teammates.
Lately he's very good actually, he plays as people expected him to, but he had these episodes of playing great in the past also, just so series of bad displays to follow. The problem is that he's very inconsistent and that the bad/average matches outnumber his good matches.
At 23 (24 in 2 weeks) it's allowed though, but his inconsistency doesn't make me so sure that he'll fit perfectly in a team outside Italy.