Question about MSI MAG 271QPXDE QD-OLED E2

Are the labelling for all the monitors on Galaxus wrong when it comes to Energy Consumption ? For example : This is listed as "A" but when i click on it it's actually "G" If i want to look at the most energy efficient monitors and I set that in the search filter, the lablelling always seems inaccurate. I might be the one reading it wrong, please clarify this to me, thank you very much.