User blog comment:Telaruhn/Aldric, The Elder Guardian/@comment-1330314-20140408052230/@comment-1330314-20140408081651

It's not the same kind of knockback, though, so it's not redundant. Sacred Hammer is meant to peel, as it pushes enemies away, and Holy Crusade is meant to initiate, as it pulls enemies in. Both provide fundamentally different forms of utility.