It's all about the failure rate. Most decent psus (even the not so decent ones) have failure rates averaging 0.1% to 1%. The TR2 line last I heard was upwards of 20%, and those weren't restricted to just DOA items, but also smoked, blown, quitters, barely stable and every other reason/excuse/result you could apply to a psu.
Out of the 3 plants that manufactured the TR2's only one was semi-mediocre at quality control, the other 2 were complete disasters, as were the units produced there.
Junk is an understatement.
As far as 80+ goes, that's not even a Standard that applies, like ATX regulations etc. It's a Certification by a 3rd party (80+) who says that it holds 80% or better efficiency at 20/50/100% rated loads. Only halfway decent psus were put up for testing, because the junk wouldn't even get to 100% at rated load. So what ypu got was a bunch of fakes that had stickers or print on the box and 80+ ignoring the as the model would change before the court date arrived.
Many of the units tested were cherry-picked, hand crafted etc and not anything like actual production units.
Also take into consideration its closer to 10 years old, used the cheapest capacitors TT could get their hands on and guaranteed has suffered serious capacitor degradation over the years as a result. If the unit was rated at 600w new, by now its closer to 200-250w and anything higher will undoubtedly end up with a smoke show or bluescreen.