User blog comment:ClariS/Escalating Return: Damage Reduction/@comment-4929329-20120816063754

The thing is, since it stacks (but mulplicatively, because it's not an additive process) with armor and/or magic resist just like the resist stacks with itself, one merely has to realize that % reduction becomes 'more powerful' as you have more resists because it reduces by a fixed amount which doesn't get smaller like stacking resists does.

The OTHER thing about % reduction is that it also promotes buying Health items that give minimal tankiness, because the aforementioned Courage spell that Garen has will give him the tankiness he needs for free, he just has to buy some HP.

I think you should work on your blog so that it is more interactive, such as posing a question like: What do you think about % reduction and the ominious future that it might not reduce true damage soon? The problem here is that many % reductions do not prevent true damage.

After all, Riot is on a mission to make True damage totally fixed, no % increases or decreases.