The difference is that the NSA is legally allowed to intercept ALL traffic and access ALL data whereas the "Bundestrojaner" has to meet very tight regulations t

The difference is that the NSA is legally allowed to intercept ALL traffic and access ALL data whereas the "Bundestrojaner" has to meet very tight regulations to be deployed and can only be deployed individually. The concern with the NSA is dragnet surveillance. The concern with the Bundestrojaner is pinpoint surveillance (plus the high risk of third party abuse of infected systems and the chance of infecting unrelated systems).