Ellenberger would have knocked him out if he tried to actually exchange with him. We saw that Rory had worse wrestling and power so that was his way to win. Rory didn't win by being more technical that is nonsense he squeaked by with not engaging and Ellenberger being too worried about gassing to spend the amount of energy it would take to constantly chase him and fight inside.
Dana giving bad advice to fighters again. Rory isn't some destroyer like Bones he needs to fight smart if he wants to beat the dangerous fighters at the top of WW.