Uh, yeah. They're better. I didn't say they're the greatest ever, but they get the job done. It sells you that the characters are each unique from each other and of different heroes, that they're as squad of young mutants, that they're working under Xavier, and each have their own powers. while dealing with dangerous struggles that feel real (the Sentinels and the Demon Bear that was alluded). Even the first issue with them running feels more engaging, as you get a sense of movement and them charging into action under Xavier's orders (it's also a good display of Cannonball, Wolfsbane and Sunspot's abilities).
When I see COTA's covers, all I see are knock off characters with nothing to add to the table. Oh, yeah, I'm sure everyone wanted a black lady Gambit! Again, I made the comparison of them being Deviantart OCs, and not particularly good ones, because that's the most apt.
I also deliberately chose the first three for comparison, while mentioning how much better it gets from an already solid start, because if I stacked this:
Against this
It'd only look even worse.