Didn't Ben Diskin say something about there being a buttload of red tape when it came to deciding which attack names would be used? That might explain things.OmniShoutmon's "Omni Core Fusion" was renamed "Omni Torpedo". Which to be honest doesn't really make much sense.
You're right. Beelzemon's Sacrifice or even Laylamon's Revenge would have been farier.The title of this episode is a really poorly chosen one since the point that this episode was trying to make in the original was how Beelzebumon had changed since his resurrection. When he was Baalmon, all he could think about was avenging his fallen comrades, but as Beelzebumon he renounced his vengeful ways and took an oath of loyalty and duty to Taiki. Having the dub make this episode's title be about Beelzemon getting revenge feels like a huge step backwards as far as his character growth is concerned.