I think there is nothing at all to be ashamed with about getting beaten by a k10,
I personally would never have a K11, I dont like them at all. comparing the 1.2 against a 1.3 is a much better comparison,
and even then there is not much in it at all, when I had my old red 1.2LS k10 I used to race Tommo 1.3 16v all the time and there was nothing in it. I couldnt pull away and neither could he and we both had the same mods exhaust and filter.