I didn't even bother reading it because the very concept of it was contrived and stupid. So the Avengers and X-Men can't agree whose "jurisdiction" a problem is. Since when do superheroes have jurisdictions? They ave always worked together in the past.
Speaking of working together, the Marvel superhero era is supposed to be, what, a decade in-universe time? The Avengers and the X-Men have known each other and worked closely since around Secret War. They know each other, trust each other, and SHOULD respect each other by now to know that both sides could handle the return of the Phoenix.
Instead of teaming up for the greater good like they have ALWAYS done in the past, the teams come to blows over what turns into a huge superhero dick-measuring fest that should never have happened in the first place.
Not to mention the HUGE character derailment of Cyclops, having him issue ultimatums to the Avengers and threatening to murder Scarlette Witch if he's not aloud to put her on trial "on behalf of all mutantdom."
Yeah that pretty much sums up my feelings too. It was pretty and colorful and entertaining, but the whole scenario with Scott and Cap' arguing it's just-... what even Do I even know these people? Literally, the best part is the bonus comics at the end of the compilation book: there's a great splash page of all the scientists-guys, like Ant-man and Beast (Dr. Hank 'n' the other Dr. Hank), arguing about corollaries and polar graphs. And then there's this rediculous page-long comic which is as if you took the first verbal confrontation between Captain America and Cyclops and let me write it. I was giggling like an idiot.