Depends on how you look at the scoreboard, you're looking at who has gotten the most KB's in the pic, not done the most heals.
You would be way up on the list if you changed the scoreboard to healing done.
I also agree, don't go full glass. I only do it because I want to be remembered as the glass hunter with big hits =p
P.S. I don't use salts all that often, just rarely when I save up enough marks to get them.