Does Star*Soldier say that Blair is dead or missing? I only remember it saying that it was unlikely anyone would see his memoirs.
That's pretty much all it says. Remember, though, that Secret Ops already gave Blair a funeral, as he was presumed dead. As far as we know, nobody in Confed has any knowledge that might indicate he's merely missing.
As for the LaFong vs. Blair thing, an interesting thought just occurred to me. WC3 and WC4 both
dramatically differ from the games in terms of the missions. The storylines remain recognisable (minus the choice-consequence stuff), but the missions are reworked completely. Because it is so rare for subsequent stories to refer explicitly to events in a particular mission, this is fundamentally a non-issue - yes, we've got two sets of missions for these two games, with some overlapping and some differing wildly, but it's ok, because there's no need to decide which are more "official", or even if they are the same.
The same thing, in a sense, applies to WC1/WC2 versus the official guide, which is fundamentally a novelisation of the games (and even handles the choice-consequence stuff in much the same way that the WC3/4 novels did). The big difference here is that on top of everything else, the two versions actually use different central characters. Except... that they really don't
. After all, neither of the first two games forces the player to be Blair. It is only afterwards, from WC3 onwards, that Blair becomes Blair, and his story is connected backwards to WC1/2 through various small references to previous games.
I'm not taking this idea seriously, treating it more as a joke... but purely
hypothetically, WC1 and WC2 do not need to be the story of Christopher Blair at all. It is only those elements of these two games that show up in future references (particularly Blair's WCP bio) that
must concern Blair. Everything else could potentially be re-interpreted. Thus, LaFong and Blair could happily co-exist, their stories being similar and often connecting up, but not being identical. The only two clashes of any significance would be around Angel and the destruction of the Tiger's Claw. And of course, with regards to Angel, potentially both characters could have had romances with her on separate occasions. I mean, hey, if the Academy (game) manual guy did, and if Blair went from having a romance with her in the movie to seemingly "not even friends" status at the start of WC1 (...or was that LaFong?), why not?