The competition in the Champion League is always fierce so it is not surprising what happened to Manchester City and Real Madrid this season, not only because of their declining performance this season but other teams that have also developed so that Manchester City and Real Madrid had to be eliminated first even though they were favored from the start.
In this semifinal no one can be underestimated, PSG is a strong team that has eliminated Liverpool, that is proof that they can be counted on and if you look at the overall strength of Barcelona, Inter Milan, Arsenal and also PSG there is no significant difference so I think the four teams have almost the same chance of winning the Champion League title this season.
In UEFA semi finals, competition will be at it's peak because every team will be giving it's best there. In quarter finals we saw Dortmund and Aston Villa lost in first leg by huge margin and they came showed good performance in second leg. Dortmund and Aston Villa were eliminated only because of bad show in first leg of quarter finals. There are two legs in semi finals also, every team has a chance to make a come back in case of bad performance in first leg. I am interested to see good contest in semi finals regardless of who makes it to the final.