But the Germans were just not equipped for an amphibious landing - sure they had a few barges to transport infantry across the channel but they had no specialist infantry landing craft or heavy Landing Craft for tanks/trucks/vehicles.Can you imagine how difficult it would have been just to get the Barges onto a beach LOL - and off again to pick up more troops !
It would have been carnage in the Channel - we would have thrown everything against them (Navy and RAF).
I personally think that the Channel Barges were a Bluff to put pressure on Britain to give up the fight,without the support of the USA there is absolutely no way we could have invaded mainland Europe so the German Top Kneddies probably did not consider Britain a threat at that time and happy to leave Britain alone for the time being - perhaps to return to after successfully invading Russia.