Depends on the author of the review I would say.
In general: I try to avoid crappy PSUs
I want quality.
Of course reviews can only give you the best, if you trust the reviewer.
But unless the reviewer is a total fail, you will get at least a decent, if not a very good psu that lasts long and delivers reliable power to all your components, which in return makes them last longer. Which is all that matters to me.
There's no master race. We just need something that does the job good or outstanding and doesn't cost a fortune. (reviews also help in comparing PSUs price-wise)
I'm not a professional at all, just some user, but this is my impression so far.
manufacturers and retailers only tell you so much and do weird marketing that often doesn't highlight anything important.
(depends on the price class though)
EDIT:
oh, and about the tiers:
just read the way they differentiate between different psu tiers there, sounds reasonable to me to get it right.
You should be save buying a psu from one of the first three tiers. For everything else, I like to select: Wattage, efficiency level (80+ something), a price point, I'm willing to pay and then I compare psus of a few brands on lists (searching for ones still available and then comparing prices)
In the end it's price + which brand do I like more ^^ (plus reading an actual review of the final psus and comparing their design, when I'm not sure)