Not often I criticise, Matthew, but this may be one area best avoided - for example, my martial art I did, up till injury caused problems, was a hard jujitsu style where we would have been classed as "Defensive", "Grappling" and possibly "Soft" (from the way you described it as being throws), in that we used to block and grab the incoming attack, use a "weakener" (ie counterattack) to get their centre of balance the way we wanted it for the throw or lock we wanted to apply - all in the space of a second or two. And yes, the "weakeners" were, unless aimed at a sensitive area, delivered in strength. I guess, what I'm trying to say here, is that maybe only a few martial arts can be pigeonholed in such a way... most have crossover of skills.
In my experience, martial arts is one of those areas best left alone and kept generic - especially since some, like Karate, have significant crossover of training at higher levels (a few offensive styles teach locks and throws at the higher levels, for example) - since I've seen extensive arguments between practitioners of even similar styles (and occasionally the same style), let alone disparate styles. Every martial artist is encouraged to think that their style is the best (with a few notable exceptions), if only by the fact that they stuck with it (the implication there being that it fitted with their mental or physical outlook). Trying to determine the "best" martial art is much like trying to argue which football team or player is best... it's never going to be settled completely...
The last issue is normally of author exposure to the various styles - those they are exposed to (and since there's more styles than flavours of ice cream, probably only a small proportion) tend to get played up while those they're not so familiar with are often glossed over and I've seen some REALLY biased martial arts rules in the past. In fairness to Mr Ross, though, he's done a fair attempt at being neutral... although his comments about grappling are wide of the mark... strength? Been watching WWF again? Most grapplers use agility, speed and hyperextension of joints to control their opponents - strength is only used when the rest fails... the whole point of grappling styles, including the sumo family tree (sumo, jujitsu, judo and aikido) is that you use the opponent's strength and aggression against them... although, even here, some jujitsu styles now train with them already holding the wrist or gi of their opponent and not practicing grabbing like we did... so even there, there's a level of difficulty in pigeonholing the art...
And a common mistake is confusing martial arts with their sports derivitives (eg jujitsu and judo) where the nastier techniques are taken out (mainly to prevent instinct or temptation) and some degree of safety is put in (I've seen some jujitsuka nearly pass out in groundwork). The most common one is Sumo where it was originally a martial art (and is, I've been informed, still practiced as such) but has also become a sport.
And nobody is unbiased in these arguments, no matter how hard they try.
Edit: BP's approach agrees with the one I prefer, I think - basically allowing martial arts to just be a more advanced form of melee and allow the player to describe what they're doing, rather than pigeonholing them... but rather letting them describe how they fight.
I'd just add technique bonuses (eg making it harder to hit you if your opponent has feet flashing past his head every few seconds (eg Capoeira or Tae Kwon Do) or if he's got his face planted in the decking at the other end of a wrist and arm lock (Aikido or Jijutsu, as well as some Kung Fu and Karate styles) but without going into too much depth (ie they don't need to try to describe HOW they're going to lock him up, for example).
This may be one best left up for each group to argue out amongst themselves.