Or do you mean, an equal number of clerics can facetank that many warriors? If that's what you mean, then only sometimes, if the warriors aren't good at timing their Rift Storms together and both go after the same cleric, leaving one to heal unmolested. If they time their RS, or they each pressure a cleric, the clerics will go down in <20s.
And, really, one cleric should be able to facetank one Warrior FOREVER. In fact, if the Warrior isn't running Riftblade, and thus cannot Silence, that's how it works.