Let's face it. If you use both Superbolide and Hallowed at very low HP totals, the two abilities are functionally identical in effect with a shorter recast on Superbolide. The penalty condition is the reason why the recast difference exists to offset it in the first place. Otherwise why would you ever want the ability with the penalty?

That's one of many reasons why the design of Living Dead is so dumb. If Living Dead is the invuln with the penalty condition attached, why does Holmgang have the shorter recast?