a few things- people need to compare these devices in different categories- as a load box, as an attenuator, as an ir loader etc.
I’ve owned a power station but didn’t use it outside of a power amp for my axe fx, and a TAE. The TAE definitely colored the sound compared to the recorded tones I’ve gonna with mics- this seems to be based on an impedance curve of a loadbox- something people have ranked in video comparisons such as this one
As attenuation goes, it seems that consensus is that fryette does this best- there will always be issues related to amps needing to move air in the room in general, and fryette has the additional complication of not really being attenuation- it’s a loadbox that then re-amps the signal from the loadbox.
In terms of IR vs recorded tone, considering an ir is essentially a final EQ of the sound imparted by the cab, a properly done IR will sound completely identical to the sound captured by the mic used in an ir using the cab and speakers used in the IR- there are plenty of people who have tested this- the differences in tone are not in the ir itself, and rather the impedance curve of the loadbox.
All in all, if you can record at volume and know how to mic a cab, it’s fun and sounds great. If you can’t record at volume or don’t know how to mic a cab, it’s up to the loadbox and ir themselves whether you will get a result you like.
I do believe that many if not most loadboxes inherently impart a certain sound that homogenizes the sounds of amps and makes them sound more similar that the micced versions would sound- which is how you get comparisons where people think two amps sound the same, but the creator says they sounded more different in the room. This is not the same as saying a cab, speaker and mic impart a certain sound on every amp- while this is true, you can still hear the sound of specific amps differ. I compared to hermanssons micced, and while both amps are relatively similar sounding, and the same cab and mic and speaker etc were used, the two definitely sound different. If I were to use certain loadboxes however, you might get a result where a wizard hell razor and Hermansson sound nearly identical- as the loadbox “homogenizes” the sounds of all amps.
If you read all this, you need to find better ways to fill your free time.