Kingfisher's forward cabin seat is significantly better than UA's (non-P.S.) domestic C seats. IT's forward cabin seats are far closer to UA's international C seats (at least in terms of recline, leg rests, etc.) than they are to UA's (non-P.S.) domestic C seats.
And IT service is generally better than it is on UA's domestic and international service, although in terms of "stock[ing] up", UA international C has a stock of alcohol.