Ha Ha welcome to the group man.

As a matter of fact, the marauding style Hattton has used in the fights u allude to is not Hatton's base style at all.
In fights upto the Kostya fight he was a high Octane sppeddy bodypuncher who held on rare occasion.
The adaption of the style i feel is partially to benefit from his own core strength and grind opponents down and sap stamina, but also to cope with the power of elite fighters.