Iw is the best film of all time. CM is not meant to be better especially in a shared cinematic universe. I am sure some might disagree but CM is a perfect appetizer for Endgame.
Infinity War is far superior. I can't think of a single thing CM did that was better.
The only question now is will Endgame deliver? IW was such a good film...it's hard to follow and expectations will be high.
__________________ Chicken Boo, what's the matter with you? You don't act like the other chickens do. You wear a disguise to look like human guys, but you're not a man you're a Chicken Boo.
I'm 99.99% confident it will, the whole script would have been written out for both films prior and I highly doubt the Russo bros, Markus and McFeely didn't save some of the best for last. They want to end Avengers on a high note.
Infinity War had a bunch of characters I like but there wasn't a super lot for them to do. Not much Character Arc going on there. It was really cool though. But was it a good like, film on it's own merits? That's hard to say because there hasn't been a series that does what Marvel flicks do.