Well, considering you guys became the Jedi (and some less nice things as well) well over 20000 years before Kay was born, in any reality he inhabits, you guys are little more than a fairy tale by the time he's alive. @.@
Lol, well, of it came down to it, I'd offer the advice 'Just keep it simple'.
Kay's strongest abilities are Lightning and Heal. He's not great at physical(-ish, hard to explain) abilities (Push, Repulse) and he's tuned into the natural flow of the Force much more than your average Jedi.
Pft, that's only it's single most powerful practioner though. And his powers are so over the top they're barely canon.
I could explain the gruesome and terribly side effects of a simple Force Push and make it sound far more horrifying and gruesome than that. It all comes down to the nature of the ability. It's a physical shove, and that's it. Neutral. xP
But again, Wookiepedia has to include everything everywhere in the canon, plus even some stuff not so much in it (although, that's usually noted), so there's some stuff in there that's iffy. Your Force usage has always seemed really questionable to me, for instance, because a lot of the times you're using obscure, ultra-powerful, or over the top abilities that have sometimes only ever been used once canonically, and that you realistically wouldn't have... o.o