Good points and important to remember that among the many dozens of past and present Legionaires, KK has sparred with them all. He's in a whole 'nother catagory altogether.
But none of them stand a chance against Karate Kid. And for the record, i'm a big Street Fighter fan going back to the incredibly awkward (but still beloved) first Street Fighter I was playing at the arcade when I was 8 yrs old. Akuma gets hurt, if not crippled for life, if not killed facing Karate Kid. Akuma can't beat any of the over half-dozen Legionaires i've named just giving you examples of whom Karate Kid has already triumphed over. Further remind yourself that Apparition's sole superpower IS intangibility, and neither she, nor Superman, nor Mon-El of Daxam has ever scored a victory over Karate Kid. Remind yourself that both Kryptonians and/or Daxamites are MORE than fast enough to vibrate themselves intangible on a moments notice and have done so in combat situations. Not to mention the hundreds of villains he's (they've) fought over the decades, many of whom are or have fatal magical attacks and/or abilities. That said, just on his own team he has masters of intangibility (like Ghost Girl/Apparition), high end strength users, mystics (like Shadow Lass), high octane energy projectors (Cosmic Boy, Solar Boy, Wildfire, Lightning Lad, so many more I can't even count) and so on. He is much like Ryu in that he does'nt care who he fights because he knows that the battle will only make him a better/stronger warrior. He's in a whole 'nother catagory important to remember that among the many dozens of past and present Legionaires, KK has sparred with them all. Important to remember that among the many dozens of past and present Legionaires, KK has sparred with them all.