Don't count other nations the way you do the US, and don't compare the behaviour of troops defending some piece of jungle on the other side of the planet with those defending their homes.
The fighting helped blunt the PVA Spring Offensive and the actions of the 2 PPCLI and 3 RAR at Kapyong were critical in preventing a breakthrough against the UN central front, the encirclement of US forces in Korea, which were at that point in general retreat, and ultimately, the capture of Seoul.
[0] https://en.wikipedia.org/wiki/Battle_of_Kapyong#Canadian_2_P...