Their dishwashers washed way better.
Actually, it was not until the 15 series that KA dishwashers were highly rated. In their first testing, the Hotpoint rated higher than the KA. KA machines were said to require more dish preparation than some other more highly rated brands. The company's conservatism kept their performance down. KA was late with a detergent dispenser that allowed a pre-rinse to help get rid of some soil and warm up the load and the machine. KA was very late with putting a heating element in the tank for boosting water temperature during wash. This could be seen in the results. KA based their reputation on being manufacturers of institutional machines, but the fact was that in institutional settings, a large dishwasher is filled with water once per meal service and then the water temperature was kept hot by a steam, gas or electric booster and the overflow from the final 180F rinse back into the rinse tank, from there into the wash tank and from there to the pre-wash tank. Even in the undercounter machine like the UM 4, repeated runnings and an external booster for the 180F rinse water kept the machine hot. Nothing kept the home machine hot so it started each cycle cold and even with 160F water, the wash water was usually 120F or below because KA did not have a detergent dispenser that would allow for a pre-rinse to warm up the machine and give some extra washing time. Consumers' Research Bulletin, I think, measured the wash temp of machines around 1960 and the results showed that machines without a pre-rinse had very low wash water temperatures, with the surprising exception of the Westinghouse with the thermal delay in the timer that guaranteed 140F wash water. Most of the dishwashers of the day were OK for fresh, soft soil on dishes, the KAs included, but most were not what could be called great, especially the KA series before the 15. By the time of the 14s, they began to be noticibly smaller than others in the field and had restrictive loading. I'm not saying that the machines before the 15s are not interesting machines and fun to use, but they were not state of the art in performance.