When calibrating multiple monitors to match, you cannot blindly accept the recommendations of the software; the recommendations are intended to get the most out of a single monitor. To match multiple monitors, you must use the same target color temp, white point, and black point for all monitors. The white point should be the highest setting that all of the monitors can deliver, so if one can do 110 and the other 125, you should choose 110 for your target white level regardless of the recommendations of the software. Similarly, the black level setting should be the lowest setting all the monitors can achieve, so if one can do 2.4 and the other 5.2, you should use 5.2 as your setting for both.