3.5. 
 Not amazing... I think it would have been better with, like, 2 more issues... I'm guessing because this is just a crazy side-thing, they weren't allowed, though. But I wanted to see way more of Deadpool killing the Marvel U... instead of, you know, just the X-Men, Avengers, & Spidey... & then throw in Howard the Duck (& an ambiguous shot of Silver Surfer) just to make it seem you are catering to the whole universe. The picture of Doom hanging dead was so crummy, I had to look at it a few times to make sure it wasn't a similarly-dressed character. I wanted Moon Knight offed. A proper battle with the space-based heroes & villains. 
 Having said that, it was an interesting comic. Obviously, by its very nature, a lot of it isn't completely believable (I mean by comic standards), but I think Deadpool's MO kind of justifies it, in a way. 
 "I can save us all from the endless cycle of continuity!" 
 DP to Wolverine: "Your tendency to come back from the brink of death has nothing to do with your healing factor. Your mutant power isn't regeneration. It's popularity." 
 So, I suppose his 'awakening' gives him the power to truly break the cycle & end these characters. 
 Worth a read, but as I said, it would have been served infinitely better with an extra two or so issues.