Okay, the world building and the plotting for this series are downright brilliant. The explorations of Krypton, Kryptonians, Sentrius, and the foreshadowing that is laid down from the start are fascinating.
But. There are several buts.
One, the DC characters drastically overpower the Marvel characters. Thor goes from someone who has, in the past, put down Superman and the Martian Manhunter at once, and been described by Superman as the most powerful enemy he ever fought, to someone on Storm level. Hulk gets beaten by needing to breathe. If he gets angry enough, he doesn't.
This can be excused by the author's admittance that they don't know much about the Avengers, which is fair enough, and what they do know is clearly based off the Ultimates, explaining Carol Danvers' characterisation.
Two, Kryptonians. If you're Kryptonian, you're basically God. Kryptonite? Destroyed or defeated by a special suit. Magic? Willpower. Other superhumans? Pwned by your amazing powers. Zod is badass, yes. But his main advantage over Superman is his experience and willingness to kill. Thor has him beat in the former and is quite willing to kill if needs be.
Three, Superman is a Gary Stu
. Majorly. The only foes who he hasn't been able to beat solo are Galactus and Zod. He's super intelligent, super nice, super wise, super everything. I have yet to remember where, aside from on Zod, he was last wrong. Also, everything, and I mean EVERYTHING, is about him. Even Ragnarok. If you are against him in any way, shape, or form, you are not sympathetic.
Four, Alison Blaire. Oh my god, Alison Blaire. The world's most annoying Love Interest
and Mary Sue
. She improves over time, when the rest of the cast stop acting as her cheerleaders, and she develops an actual character. The best that can be said is that she's an easily ignored annoyance who has some redeeming features, most notably a genuinely Dark And Troubled Past
, once she discovers it. The Empathy bond between her and Supes, however, is nauseating.
That said, the plot is compelling, it has a well fleshed out supporting cast, and some fascinating examples of world building. It is well worth reading... it just isn't perfect. Not by a long shot.