So it was Bruce who created the storyverse... damn. This means tht we'll never get to know the meaning of lots of obscure references, like those in the Prelude on Targ novella, as well as the reference to the "Mid-Milkay wars" in Mercenary 3 (of which I had to give my personal interpretation for the Italian translation of M3: I interpreted it as "middle of the Milky Way").
I would've also liked to know from an official source whether the story I thought for Mercenary 4 contradicts canon that does not appear in the games (I would've sent the story to you and you would've sent it to the correct person), but of course, now it's too late for that. I'll have to settle for what I already wrote, attempting to fill some of those gaps by myself.

Also, one nitpick... it isn't "superson" (as in "supersonic"), it's "SuperPerson", as a joke on political correctness gone awry (replacing the "man" part of "Superman" with the politically correct "person") ;-)