Rogi played absolutely awesome, certainly a lot better than his 2 previous matches! He hit tons of winners and incredible passing shots, while doing very few UFES... He definitely elevated his level, and it's gonna be tough for his opponent in the semis!!!
If Mario cannot even win a title then he cannot win Wimbledon. He might or might not be a future star and possible Wimbledon champion. It won't happen for a few years though and who knows he might need a sick of injuried Roger in order to nab it.
Mario doesn't have the head to win a slam. He has serious mental problems, in a similar way to Mr Safin although he's managed to win a few Slams. Ancic also isn't that much younger than the current crop of Federer/Roddick/Safin/Hewitt etc, and look at the difference in achievements. A talented but overrated player in my opinion, he simply can't be considered a major threat at slams yet.