In that case, Valeros has a Wisdom above 8, took the Iron Will feat and has a couple of magic items available. You see, Valeros was build specifically to fail Will saves, so it's pointless to use him as an example of how easy is for high level fighters to fail them.
You can not be serious.....Valeros is obviously a fighter built by a newbie a.k.a doesn't realize how much he will get screwed by an enchanter...System Mastery for the WIN!!