Board Thread:Versus Battles/@comment-31165326-20180220215504/@comment-26134263-20180220220558

It is, but Willpower Defense works like this:

Say you're in the 3rd dimension. This means you can resist everything up to an infinite 3-D scale, no matter what percentage of Willpower Defense you have. Ex: You resist something that harms Large-Planet level beings by 50%, but you can also resist something that harms High Universe level beings by 50% as well.

This same principle is the same if you're in the 4th dimension. This means Linx can resist everything up to an infinite 4-D scale, aka Multiverse+, even though his Willpower Defense is 90%. This means he can resist DIO's attacks by 90%, since none of his attacks are 5-D (At least, not that I know of).