Quote Originally Posted by CosmicKirby View Post
So uhh, the reason why Xenos could kick our butts at the start is because he's a genetic supersolider monstrosity that is being enhanced by an artificial version of the same echo that makes US the main character.
Where was this said though?
The end has them refer to him as an experiment and a monster, but we don't know if that's only with respect to the modifications he had done to himself or if there's more to it. It feels like there's more to it, but they never elaborated.

And as for the resonance thing:
1) That shouldn't put him above us. Lyse et al? Sure.
2) Did he even have that ability at the start? It was specifically stated that he wanted Krile alive and the first we explicitly see of the whole resonance thing is after she has been hooked into the machine. It could be possible he already had echo-users in the other chambers, but it was never mentioned. If he did, then I don't know why the capture of Krile was so critical. And we also apparently abandoned them after freeing her?