Wow. So much happened in these six issues, and yet it doesn't feel overly-condensed. It is no exaggeration to think that Bendis, with the usual "witty" dialogue and de-compressed storytelling, would've made this a 12-issue arc. So already that's one good thing.
The pacing is fast, yes, but that only grabs your attention and pulls you in further. What is amazing to me is that, of the Big Guns, Hickman only used Iron Man and Thor, mostly. Even Captain America, who so prominently graces the cover of this book, only shows up at the tail end of the arc, out of costume, and *declines* Fury's call for help.
The situation does indeed look grim for our "heroes", even hopeless, but you just know they'll win in the end. I mean, it's their book, right?
Here, Hickman does what he does best: throwing at us one exciting concept after another, blowing our minds away without overwhelming us. Just like he did in "S.H.I.E.L.D.", "Fantastic Four", and "Secret Warriors", and what he's doing now in "Manhattan Projects", which I urge you to check out.
Also: Major props for Ribic & Peterson, who supply the art, and to Kaare Andrews, for the simply stunning cover art.