If you have no forgotten at the beginning of the season no one thought that PSG will even reach that level or talkless of even winning the trophy, PSG pickup a very good performance during round of 16 and everyone knew that they are fit to win the trophy due to their rapid performance towards the ending of the competition. I'm not disputing your fact about PSG winning next season but anything can happen along the line, because up to this moment that aggressive is still with them if you check their last match in the FIFA club World Cup they won with a massive goal which know one expected. I agree with you Champions League is the most difficult trophy to win and it only takes one team to ever win it back to back, and I will say that was then. They will find it very difficult to do it again because it have become more competitive and more challenging than ever.