I'd be willing to bet that the original poster is using Safari. I could be wrong, but third party web browsers are a small piece of the pie right now.
When I log on to ESPN.com from my iPad, I see the same site that I do with IE8, Safari, or Firefox, because I was asked by ESPN if I wanted it that way. It all has to do with cookies for ESPN.
1991-C4, you are using a paid third party app with non-default settings. So you are presenting a situation that really isn't related to the original post. Please try it on Safari, which most people use on an iPad right now. Then please repost and tell me that it doesn't prompt you (assuming you haven't already set the cookie).
If you are using Safari on an iPad and visiting ESPN, then it prompts you as to whether you want a mobile site or not. There is not a debate there. ESPN knows that an iPad can handle a regular site, so it asks you what you want and then puts your preferences in a cookie. And once you set that, you will constantly go to that site until you clear cookies. I think ESPN was smart to do this, but it locked a lot of people in in the beginning and they can't figure out how to change it.
I think this is a common problem.