No offense, but you're a crybaby. Good thing this isn't Classic pre-2009 because you'd get laughed at by the entire community.
Point #1: You don't define what's "legit" and not. No idea who put that idea into your head. You can PK however you want, and everyone else can PK the way they want. Are using bombs "legit?" You can't tell another player what is or isn't acceptable, because your opinion probably means nothing to them.
Point #2: Anyone can do it. The reason you don't do it is because either you don't want to do it, or you've made up some reason in your head why you can't do it because it's not "legit." That's stupid, and your own fault.
Point #3: Despite it taking 4 hits to kill a player, I'm not seeing how it's faster than when Sardon's or Graal City is packed. I got the same number of kills in an hour PKing at Sardon's yesterday pretty casually. Klaire gets so many kills because she is literally always there and always PKing. Pretending for a second that it is faster, then why aren't you doing it? Oh yeah, because it's not "legit" by your personally-preferenced standards. Okay. I'm pretty sure Klaire doesn't care and I'm almost positive that administrators don't.
Quit getting butthurt because people don't play the way you want them to play the game. "OMG MAKING WALLING AND SPAMMING ILLEGAL IN SPAR DIS IS NOT FARE."