You don't think it's always an indication for them for a Champions League game, but I think it's very important for them. Is AS Roma better than Barcelona? I think Barcelona is a better club than the opponents they faced before. Barcelona are unbeaten in La Liga and only tasted defeat against Bayern Munich in the second match of the Champions League group stage. And you realize that, that Inter Milan will be very difficult to play against Barcelona in the next match.
Inter lost at home against AS Roma in Serie A. In UCL Inter and Barcelona have the same points. Barcelona is only ahead on goal difference. Of course this match is interesting, because three points are worth it so underestimating Inter is certainly too early. They play at home to Inter, and that's an advantage for Inter. There will always be surprises going on, inter certainly have a motive to win because they also want to get into the knockout phase. Statistically it may be that Barcelona excel but the statistics do not have a big influence, because both teams have players who have experience playing in the UCL.