Deutsche Bank is too big to fail in my opinion, it will get bailed out if anything shaky happens - I think that the negative press will certainly help the bitcoin price in this kind of situation, you can already see some movement with a lot of the altcoin prices falling as people are moving their funds back to BTC.
Deutsche Bank is big, sure, but no company is too big to fall. After economic crisis in 2008 many BIG financial institutions and services fall.
Have you heard about bankruptcy of Lehman Brothers? It was the largest bankruptcy filing in U.S. history, with Lehman holding over $600 billion in assets!
The bigger they are the longer the fall.
Reference:
https://en.wikipedia.org/wiki/Bankruptcy_of_Lehman_BrothersSatoshi invented Bitcoin to give people a chance of avoiding exposure to another Lehman Brothers like collapse. If Deutsche bank fails people have Bitcoin's safety net, and will flock to it.