I don't think it really matters that much, but if you really must:
You know the deal; Nero arrives via his special anomaly and off shoots a brand new Universe independent of the PRIME™ timeline.
The "prime" timeline long ago established that it was one of an infinite number of alternate universes, some of which featured in the TNG episode "Parallels." (I think that's the correct title.) So if it helps any, I guess
you could think of the NuTrek universe as a radical outlier among those alternate universes.
I don't think it's necessary, though. The tie-in to the "prime" universe was a nice nod, but the reboot universe is otherwise very much its own thing.