Didn't care for it.
First off, I'll start with the 4 issue format. Everything felt rushed. It should have gone at least 6 issues, imo. I mean this is the culmination of everything they've been building to since secret war ended, and actually since sentry came back in new avengers. And they rush through it in 4 issues. Thor vs Sentry was a fight that we've been waiting years to see. There should have been a whole issue dedicated just to that. But what did we get? 3 or 4 panels of them trading blows. Horrible.
And don't tell me, "Oh well the tie in books flesh everything out." Bullshit. Tie-ins should be optional reading, that enhances the story. The main book still needs to be able to stand on it's own. This doesn't.
Moving on, I didn't really like steve rogers donning the stripes here. If anything, it was the perfect oppurtunity to fully establish bucky as the new cap.
The last couple things I really didn't like involve the sentry. Firstly, I am a fan of the character. I have always enjoyed enigmatic characters, and they did a phenomenal job, at spreading out over time, all the new discoveries about his origins. What I didn't like was that he was just some junkie that randomly drank an enhanced super soldier forum. Not the part about him being a junkie, as that was interesting. It was the serum part. Like BDC said, you have to suspend your disbelief a lot when reading comics, but there is a limit. At some point, you're going to say "Well this is just stupid." And the sentry becoming powerful enough to probably singlehandedly defeat galactus by having a drink(one that wasn't even magical, at that) is tupid.
So at the end of issue 3 when sentry transformed, and Norman implied that they don't know what sentry really is, I got excited. Was waiting for some big reveal in issue 4, but it didn't come. Dissapointing.
My biggest gripe however, is with how quick the other heroes were to kill him. Whole conversation was pretty much:
Sentry: Kill me
Heroes: No
Sentry: Seriously
Heroes: lol ok
There was literally no conflict in the decision whatsoever. Not even after the fact. It's just that it would be nice to have a little consistency, considering that for 60 years, heroes refused to kill even the most dangerous and evil villains. Seems especially stupid after reading Fallen Son, where everyone was saying how much they admired and respected him, and made him out to be the greatest hero ever.
Still a fun read, it's just that I was expecting so much more from it.