How do Quicksilver, Northstar, Flash or any other speedsters get stopped/defeated in the comics?
I've never read any of their comics. But I assume through either some lazy writing or great writing depending on the book, just like any other super powered character.
I don't understand you, unless you want to have an actual debate about it then I'm just going to drop it as yes it will, no it won't, isn't going to get us anywhere and you don't seem interested in an actual discussion and feels more like troll bait.
Well as I stated previously, it doesnt matter how "fast" they make quicksilver as the general audience will not care. Not to mention that the story would be written in such a way as they that his speed will more than likely not break the plot. As long as they continue to make it look interesting, nobody will care just how fast quicksilver is running, nor will anyone probably notice.