WINBACK

I've read a lot of practical info about Jin in this thread and I've watched a lot of vids, but it's hard for me to interpret since I only play GG and I've never touched Blaz. What exactly does he excel in compared to other characters? Above average Rushdown? Lows? Safety? Anti-air? Projectiles? Why pick him over...say...Ragna, who's the straight-forward offensive guy with a good balance of options and strength? I know Jin's not too high on the tier list, so he may not be all that great in some areas, but it'd be good to have an idea on what to focus on. I'm not looking for an in-depth report (I already tried looking at those), just a blunt response.

From a personality perspective.....I thought Jin's archetype was gonna resemble Ky's "nice guy" persona. But is it true that Jin is pretty much a top-class deushbag, and he makes mostly quiet/girly sounds as he fights? Thanks.

Accent Core+ Ky is exactly the same as Accent Core Ky? What did I spend $30 for? Thanks.