There was a Juve fan on another thread complaining that they were only allowed a ticket if they bought a Euro 260 package (of which the ticket was Euro 50 and the hotel Euro 210). That probably explains the half-empty visitors section and away fans all around the ground.
Corruption and backhanders in Turin?
This dude said why!!! Only 2 ways to get ticket in the away block: 1 difficoult and 1 expensive...I was lucky and I've got 3 tickets by asking for them through a JuveClubDOC (sort of official social club approved by Juventus FC, you just have to pay your annual membership, they have the right to demand the club for away tickets, but not everytime they get assigned the whole number of requested tickets) so I paid only the tickets and no additional services.
Unfortunatelly the terms to request the ticket for this match were very short and many fans weren't able to purchase them...many of them maybe just didn't know the complicated demanding method I described before.
Then there is the expensive alternative that has been already accurately described by JGL07 ;)
I understand your disappointment guys, I don't complain at all... but you maybe could feel a bit of sympathy for all of those poor Juve fans that ha no other way to attend this "looked forward" match...of course many of them already knew the prohibition about staying in home ends, but guys...admit you would do the same to attend a City's game if your sales policy was the same shit of ours one...because I'm sure you love your team and you would take some little risk like this :)
Come on guys it was just the first match it's not over at all and I personally hope City and Juve will go ahead in CL ;)
PS=sorry if my english hasn't been very clear or corrent...and about coming in home ends in Turin: just don't go in very hot tiers (curva) and insthead buy a bit more pricey ticket in the "tribuna", very nice view and the attendance there is not formed by ex-convicts and scum, you'll be superfine!!!