The Datasheet gives the max. power of 2400W up to 40°C Multiplus temperature, not ambient temperature.
You can’t really see the internal temperature, but I know from my system, that in a 25°C ambient temperature, the MP2 3000 can deliver approx. 2000W. It starts with 2450W and degrades after ~20min down to ~2000W.
You can use the temperature sensor, that is delivered with every Multiplus, and place in on top of the MP2 where the hot air is streaming out. Then you can better guess what is inside the MP2.
Regarding your screenshot, - the visualization maybe does not accurate/fast enough, that’s why it may not be that precise. I counted the Battery discharge current and the MPPT power what gives you approx. 2100W the MP2 is pulling…
Therefore you go in remote console → settings → system setup → battery measurement → and select MP2 to be shown. Then you have this box below in VRM. this is showing you the output of the MP2.