"Bliz said "instead of coding in threat wipes for all these new high dps hybrids, lets just give rogues an aggro utility for the main tank". So in essence, yes, a rogue being brought along is the same thing as your threat being wiped."
said by a rogue in general forums.
The problem with this guy's logic, as well as possibly other pures' logic, is that there is a misunderstanding of utility. The blessing of salvation is not just a "threat reduction buff to everyone else" no, its utility that the paladin brings. This buff to rogues does NOT qualify as a threat wipe for everyone else.
*dons fire-resist gear*