Cam differences

So my question is, is the HKS 272 going to be any different (other than whatever metals they use) than a COMP cam with the same specs only because it is an HKS?? And is the HKS 272 actaully a 272 or is that just a series or ID number and not the actuall duration? I've heard on another forum its not acurate and I'd like to get an answer from someone who might have actually measured them. I did try to google this and got search overload, same with the search function here.