"With a 1000 MBit line, the turnaround time for the same will be 0.2ms, basically nothing"

How do you figure this? That doesn't follow at all. The proverbial[1] van full of microSD cards may have much more bandwidth than a 1Gbps line, but it will never turn around in 0.2ms.

[1] http://www.tidbitsfortechs.com/2013/09/never-underestimate-t... - 67Tbps estimated bandwidth for a station wagon going between LA and NYC.