That knife looks a lot better than the Topps trapper, however I really don't like it, I had one a few years back to try out as I was curious but its an awful lump of steel that can't do any job to a reanable standard, I found the blade far to soft and the grinds were not to my liking. Saw was a load of crap and the handle too square. Just think what you could get for the money, probably a folding saw, quality axe and a custom 4" blade bushy by a reputable maker from here or the USA.
This is going to sound bizzare but I think it is about the knife you use. If you want a survival style knife, you are excepting a jack of all trades, which is a master of none. I have seen video footage (And if any one can point me in the direction of anything like this would like to put something together) of a native (Looked Indonesian) using a machete to do detail work. Using it a lot like the foot knife that I have seen Indian women use. What he basically was doing, sitting cross legged he seem to have an 18 machete, either balanced between or resting between his big toe and the next one, and he was working the top inch of the blade or so that stuck out past his foot.
My point being, if you go from a mora to something twice the size, it is going to take practice to do the same things. You only have to think of the kukri to know there must be ways to use a big knife to do small knife jobs, but you cannot do this the other way round.
That said would be very interested to hear someone who has done the actually Tom Brown course and seen him use it. This guy is not Bear Grills so maybe it is a training thing. If we do find someone, what is the deal with the rasp?
All of that said I can only agree that for that sort of money, I would be expecting an edge like the seeming mythical vietnam ka bar's, and it to function perfectly.