Graham,
My apple tv 2 is already jailbroken. What I am saying is that I can get most of the same stuff - football and TV wise - much faster thgrough my PC or laptop and 'cast' the images to my TV through google chromecast.
Whilst I will still use my apple tv for movies I don't really see the point in booting it up for the football when my PC is much faster at getting it on the big tv.
Unfortunately the ipad does not have flash so many of the football links don't work. If they did I could simply 'cast' them accross as well.
Not saying it's better than apple tv but it's a much easier alternative for those with a decent PC or laptop.