Despite his power The Sphinx has proven his jobber aura is more then enough to overcome his power level. I've long said that the Ka stone is nearly akin to a junior cosmic cube in its ability, so given the power of a single Ka stone (large scale reality/time warping ability) Sphinx should win with just one. Two should be overkill. Emphasis on should… CIS on I'm sure that Anath Na would find a way to lose.