The point he was making is that Vader never defeated HBK in a singles's match by pinfall or submission, and the matches he did win, he won in dubious fashionm. A 400 lb man, one would think, wouldn't need such manners to defeat someone, correct? Unless that man is better then him.
HBK has made plenty of people over time look good, many times people who will never touch him in status. Benjamin, Kennedy(Anderson), Cena, Orton, Jericho, an old Hogan, and even freaking
Khali had his best match against Shawn in their no DQ match on Raw. The proof is in what we've seen, not some backstage rumor you've heard. And the fact that matters is, Shawn has made more people look great then arguably anyone since his return to his retirement, based on what we've SEEN. Not what we've heard.