Is Wrex not alive if you don't have a ME1 save? At least you got to avoid that horrible conversation with Ashley where she bitches about you not contacting her even though you were busy being dead.
Nope. Some Urdnot replacement on Tuchanka and he says some backhanded comment about letting Wrex die.
Also, the default for Ashely is pretty much the same. She's obviously attracted to you and you ask her to join the team but shes like no I need to help the colony! She doesn't bitch though. I would've liked to see that. Miranda > Ashley