an airline named after a beer manufacturer.. hmm. jet airways vs. kingfisher, airways wins. king fisher is a LCC.
How many flight have you taken in India?
Kingfisher is not a LCC, particularly not by anything but fanciful "standards".
I generally pay more for coach tickets on Kingfisher than Jet Airways domestic flights, with Kingfisher's coach cabin more comfortable than Jet Airways.
And Kingfisher's biz cabin is better than Jet Airways's biz cabin too.
As I've noted elsewhere, Jet Airways is better with baggage and somewhat better with food, but otherwise Kingfisher is a more comfortable experience. Both are good carriers and neither is a LCC.