The established canon for the Kelvin “timeline” is that it is in fact actually an entirely different alternate reality:

Star Trek Online said:
The sheer destruction from the Hobus supernova has weakened the barrier between our reality and one strangely similar to our own, leaving a strange temporal anomaly in its wake. This anomaly serves as a gateway between our universe… and a quantum universe both similar and different to our own.

Simon Pegg said:
Canon tells us, Hikaru Sulu was born before the Kelvin incident, so how could his fundamental humanity be altered? Well, the explanation comes down to something very Star Treky; theoretical, quantum physics and the less than simple fact that time is not linear. Sure, we experience time as a contiguous series of cascading events but perception and reality aren’t always the same thing. Spock’s incursion from the Prime Universe created a multidimensional reality shift. The rift in space/time created an entirely new reality in all directions, top to bottom, from the Big Bang to the end of everything. As such this reality was, is and always will be subtly different from the Prime Universe. I don’t believe for one second that Gene Roddenberry wouldn’t have loved the idea of an alternate reality (Mirror, Mirror anyone?). This means, and this is absolutely key, the Kelvin universe can evolve and change in ways that don’t necessarily have to follow the Prime Universe at any point in history, before or after the events of Star Trek ‘09, it can mutate and subvert

So it’s actually the Kelvin Universe.