You don't throw just 'some' of your weight at a Phase Sixer and expect them to move. It especially doesn't work when said Phase Sixer had a ridiculously dense body mass that was made of ununtrium, black hole harvested alloys and a self regenerating power source.

Sixshot hears the shift in Megatron's foot steps and braces himself for an attack. He knows Lord Megatron's attacks well and he expects to be floored in a second--

The anti-climatic 'thunk' against his leg was... surprising. Sixshot blinks and then looks down at Megatron, optics wide with confusion.

"... Ah." And for a few long seconds, he is speechless.

"That was... a start."