Skipness,
Don't know about the MAN tug, but the lads driving the 747/77W tugs at BHX say in very wet or icy conditions,they would struggle in traction to push and tow an A380 with them.
We therefore have an A380 tug now..no A380s but a tug for one ,which EK requested ,in case they drop an A380 in. They nickname it "The Beast"
Its used each week to push some of our 777s
Nigel