I object to the term "ultimate" because I think martial performance depends much more on the individual than on the system. "Ultimate," to me, implies "undefeatable" or somehow superior in technique. There certainly are some systems whose techniques are more realistic and more efficient than others, but a skilled practitioner of one the latter will defeat an unskilled practitioner of one of the former in most cases. I also object to "ultimate" because it implies a single martial art superior (by whatever criteria we choose to use) to others, when in fact there are several arts and systems whose practitioners perform equally well (on average) at any given tier of martial development and according to whatever criteria are used (though the groups will vary with those criteria). Hung Gar and Wing Chun aren't better or worse than each other when used by equally skilled practitioners; they are simply different and accomplish the same goals through different means (though they share many similarities as well). One could easily argue, for example, that WWII Combatives as taught by Carl Cestari, combatives as taught by Kelly McCann, or even Combato, Defendu, or Defendo are as simple and as expedient as Krav Maga but more effective. We could make the same argument about, say, Contemporary Fighting Arts or Senshido -- or even pit these systems against one another. Who would be correct? Even some sort of contrived sporting event pitting practitioners against one another tells us more about the practitioners than about their styles, which does not even touch the previously voiced objections about whether a sporting competition is even an appropriate environment in which to evaluate the performance of a martial art not intended for sport. (By this I mean that one assumes the system is for self-defense, which is not a sport.) There are certain universal principles -- on which no two practitioners of martial styles and systems are likely to agree on any given day -- to which any effective, efficient martial art or system should correspond, and many systems do so to varying degrees. Many people believe the system in which they train is the "ultimate" art, or they wouldn't be training in it. Barring absolutely ridiculous technique, however, any reasonably constructed system can and will work when applied by a determined practitioner. There may indeed be some sort of Platonic Ultimate Martial Art, the Sun Source from which all lesser systems spring (if you're thinking, "Sinanju," we should talk ), but I've not seen it, I don't know how anyone would determine it, and I doubt anyone's likely to prove their case for it anytime soon. There are skilled practitioners and there are systems better suited to some individuals than others. There is no single, perfect, "ultimate" system of which I'm aware, though.