Suggested by Destroyer Vakishim has way better attack options than Hedorah but Hedorah’s durability is on a different level. This really comes down to whether or not you think Vakishim could break down Hedorah’s defenses before the guy covers Vakishim in the ooze. For my money I’d say that Vakishim’s onslaught of moves will do the trick. A good offense will typically beat a good defense. Vakishim wins.