I think he is answering your " I wouldn't touch Kumho's" quote by pointing out that they are of a comparable quality to the competition whilst being sold at a much cheaper price.
A lot of Caterham racers choose Kumho's over Yokohama AO48, Toyo R888, Avon ZZR etc,etc,etc. I would hope this is slightly more comparable for you ??
Tyre snobbery changes like the tide. Many of the Porsche GT3 owners that " would never touch Toyo tyres " now use them and rave about them. Going back many years people were wary of "Japanese" tyres.
I have no axe to grind for Kumho or any other manufacturer and care not what you use or do not use, our choices are personal and depend on useage. The same goes for oils. Just because Lotus (get paid), sorry I mean recommend Shell does not make it the perfect oil for all uses of a 2 Eleven. On the other hand I do find your original "I wouldn't touch Kumho's" comment quite ridiculous if you have never tried them and it is based on tyre snobery alone. Who knows, in a year or two Lotus may recommend them and how will you be left then :-)
I believe that if more owners try different tyres, oils etc,etc and report their experiences back to the forum it can only enhance our future knowledge. An open mind is helpful to all during this process.