"The short interest is an insignificant number.Means nothing at this level."

True for the US market. DTC ratio is insignificant.

However, What is the ratio in Germany, if, infact German markets allow naked short selling?

The few quotes I've seen from there show little volume.

Unless a shorter can succesfully arbitrage the stocks, then to effectively buy back shares, they may have to buy back shares on the US market before the price runs away in a short sqeeze on the German board. Demand is Demand, and if those naked shorts have to buy back, where do you think they will the best way... the US BB stock has much more daily volume.