Hey Chris,
Onefinity makes nearly no statements about the capabilities of their machine in the meaning of providing numbers.
In any case I would assume that on a machine that uses a .75 kW hand trim router as milling motor (which since it is a commutated series-wound motor with carbon-brush commutators which by translating AC into a DC-like motion, induce counter-currents due to electromagnetic induction everytime when alternating current direction, that besides the production of heat and sparks, ensures a poor efficiency, furthermore a motor with very unfavorable motor characteristics, and a power statement that means power consumption and not, as IEC 60034-1 requires, the mechanical power available at the shaft, does not at all translate to the performance of a .75 kW spindle), the router is the limiting factor, whereas with a 2.2 kW spindle it should be the machine (assuming that a chip load that bends the machine or makes it chatter is outside the range of being specified).