Well, think of it like this. All kind of DoT’s or status ailments are magical attacks, whereas normal damage is dealt by a weapon. Now if you are a fighter who is agile, it would be easy to dodge a weapon reasonably efficiently with enough training. But it would be impossible to dodge a magic attack, unless you have some kind of charm which prevents a particular magic being applied to you, for example some HOTMs who are immune to certain status ailments. 
