Spoilers alert: Have ever been a movie where the bad guys trully wins?
I loved this movie, is the best MCU but is also the saddest and darker of them all.
Thanos WITHOUT the Infinity Gaunlet is super strong, so strong that he beats and scares Hulk. Then with the Infinity Gaunlet, he just became a god and trully invencible. (I don't think Captain Marvel or Adam Warlock or any other godlike Marvel character can take him).
My opinion is Thanos in AIW is even more OP than in the Comics. He is just that over the top.
In fact, in the very end with the "snap-erase-50% everything-thing", AIM became kind of a horror movie.