Atletico Madrid is a very tough team when it plays at home, but I am not too much sure about Man City because there are af people that are complaining about the tactics used by Guardiola yesterday, Man City seemed very unbalanced and some players were out of their position.
Atletico under Simeone have peaked, they’re not progressive enough to ever win the CL. Parking the bus, packing bodies in their own defensive third only gets them so far. You need to go out & try to win games by attacking.