User blog comment:KaiserLos24/Skins- Symbolism or Just For Show?/@comment-5035765-20131231011108

well, I think there's two kinds of people that get skins

a) Good with the champ, so they want the champ to look good/different when they use them (and to separate themselves from freeweekers)

b) think the skin looks good and buys it regardless of skill with the champ

type A's are the ones that kick your ass in lane, Type B's performance is less consistent.

basically, the Kat in your examples was probably a Type B, while the Lee Sin was probably a Type A (I myself am a type A most of the time)