No that's like C rank at best. Kinda like calling yourself a hacker because you downloaded a program online that keylogs facebook logins if you put it on a friend's computer with a thumb drive.
Killing 175 in woe using a 99 ninja wouldnt be even A(wich i did already), what to say as RK lol
C...looks fine for me
PS: i'm still learning at RK, even i play this for 3 years i guess, but to be honest guys, its very very easy to get a kill and survive than before, before i just get one punch (on hit) by random Ranger and WL, but its a very very shocking moment for me to have that streak. maybe if i continue developing my RK, it might be strong enough to challenged other classes like RG ,sura and other RK 
another PS:let's just say i'm happy to have that kind of killing streak, for 3 years of playing my RK, my RK won't kill any of that classes(at pRO, its full of very strong players, and before it closes, i'm closely mastering my class) but honestly, players i face is not that skilled nor strong, mostly are relied to their equips, its sad. My brother said to me " most of the GX are not good, most doesn't have EDP, some they have good items but their stats, not good", so in that case, most of the players that i killed are just confuse with their stats =/ and maybe your ninja is too good for a poorly build level 175, i know 175 is very very tough(OP) but when its poor build, its worthless 
