[quote name='stingrayPete1977' timestamp='1346500870' post='1789946']
Really unless someone comes up with a standard test its all nonsense
[/quote]
None of these 'tests' performed by any of the mags or experts are official tests. They are merely their way of attempting to gauge the watts. Which leads me to ignore them now.
In the real world outside forums, the RH750 completely slays. So did the RH450.
There are plenty of traditional amps that have also 'struggled' to hit their wattage. Eg:
Mesa 400+ (ridiculously expensive, huge, and heavy)
Ampeg SVT Pro 3 (not my cup of tea at all, and needs to be maxxed out on the gain and master to keep up with amps in the same category that are barely ticking over).
Personally, I don't care about wattage. My Orange AD200b could smash down walls, but it depends what you want it for. I've given up on caring about the advantages and disadvantages of neo/ceramic class D/tube/SMPS, etc.
Play what you like, for the right reasons. If it sound great and has good quality aftercare (eg like Genz) then stick with it.