You see, this is something that plays role in how we see the efficiency of two different HPs at different load conditions, your pump consumption is higher that what we can see from other brands, same for another Daikin 9kW that is shared.
If your heat pump puts out 4000Wh using 900Wh including the high power consuming water pump that is a COP of 4.44ish
But if you would be to compare with other systems that looks like the water pump consumes only tens of watts, thus lets assume we take out 100Wh, a 4000Wh heat output using 800Wh will give a COP of 5.
Equally the lower the output the more of a difference in COP those 100Wh will make vs the higher/max output.
This tells me why the Daikin is/looks to be less efficient in reality, without taking in the account that we don’t know if in their certification paperwork, this high consumption of the water pump is included in their COP calculation/certification equation.