These are the weakest, crapolla signals I could find on my cable box. If you want to know what a bad cable signal looks like on a widescreen display, this will give you an idea. The soccer game in particularly is a worse case scenario - weak, fuzzy signal, distant players on big field etc.
Still, even the worst signals actually look better in person than it appears here. They are even "watchable." Luckily, very few channels look this bad.