That has always been his job in Germany. He's known for his high achievement rate, that's why they put him in "difficult" ministries.
If Schäuble causes a EU disintegration, then they'll ask for his head on a plate and he will be judged as a financial criminal/terrorist/blackmailer.
That's GDP. Bild or whatever is probably refering to median household wealth or whatever:
http://www.voxeu.org/article/are-germans-really-poorer-spaniards-italians-and-greeks
Sorry, but that's nonsense.
It's well known that ownership occupancy is pretty high in Greece (due to cultural reasons), while on the other hand Germans prefer renting houses.
Most of those houses were built with the cheap drachma and now they seem "expensive" thanks to euroization (prices have doubled/tripled).
Just because someone has his own house (i.e. an unemployed person in Greece), it doesn't mean that he's "rich". Also, just because someone (i.e. a corporate executive in Germany) rents a house, it doesn't mean that he's "poor".
GDP/per capita income is a more objective way to deem who's poor and who's rich.
You also have to understand that Greece has no social safety net. If you're unemployed in Germany, then the state will give you a house. If you're unemployed in Greece, then you're fucked, unless you're lucky enough to have your own house and even in that case, you're still semi-fucked thanks to ENFIA.
If you don't delve into the Greek culture, then you won't understand why Greeks have a high ownership occupancy. It's the same thing with the Protestant logic behind austerity. See what I'm saying? Clash of cultures.
So, what do you want Greece to do? To sell their own houses and live on the streets? I wouldn't be surprised if Schäuble proposed that...