Ronald Held wrote:
The Kelvin was only seen in the JJverse and there could be changes in the past due how the temporal war players may have changed(as an example).
But why would you even think this to begin with? Would you be thinking this if, say, the Kelvin bridge looked just like the TOS Enterprise bridge from "The Cage," and the uniforms looked like "The Cage" uniforms?
The "JJverse" started when Nero came back through time and changed things. Before he did that, the universe was the same as the prime TOS universe. That's what Kurtzman and Orci stated, and that's good enough for me. YMMV.