It looks like nothing has changed about Inter after the international break. Actually it was a long enough break for them to collect themselves and focus on their game much more. For example, Juventus did this very well and destroyed Bologna right before their Champions League match. Inter had a more challenging opponent like Roma of course but they should still have been able to win in Giuseppe Meazza. They lost by 2-1 instead and made things even more difficult for themselves.
I expect them to be not very prepared against Barcelona as well. But Barcelona are in a pretty solid condition now. No matter where this match is played, I think Barcelona would defeat them anyway. Therefore Barcelona win @1.82 is pretty attracting to bet on.
Matches that teams play before the Champions League are not always worth taking into account, as they may not always be indicative, but I agree that Barcelona are now in much better shape than Inter. Actually, when you get into the same group with Bayern and Barcelona, it already sounds like a verdict, Inter initially had very little chance of reaching the playoffs. Maybe I'm too hasty with conclusions, there are still many matches ahead, but I doubt that Inter can beat Barcelona.
I feel it is the opposite. They play games before the champions league, and they use the tactic they will use on that game. This way they would be a bit more trained against the UCL opponent with the same tactic worked on them before the game. This is something that could benefit them quite good, it's not going to be insanely good for anyone, but at the same time we are talking about not missing out a chance at least.
I believe it's a good method, definitely something that could be profitable if they take that chance. Maybe not all teams do, but this is possible and because of that I believe it should count and count more than any other boring regular season game.