Whoever said that doesn't know what they're talking about.
Vapes concentrate the THC so if anything you're getting more high, however the type of feeling you get is completely different from smoking a joint or a bong. I find Vapes tend to allow more of a mellow high, you don't necessarily notice how high you are until you actual step back and think about it, or you sit on a comfortable piece of furniture. After a vape sesh, I sit around and tell myself "I feel fine" only to stand up, walk out of the room and realize that it just fucking took me 10 minutes to shimmy 15ft.