It will be interesting to see whether the Radiohead experiment is deemed a success or failure. It could easily be skewed either way. Results are in, so begin the skewing.
It will be easy to say majority of people to advantage of the situation and didn't pay, so Radiohead are suckers.
It will also be easy to assume that an album released in the traditional manner, also has a high volume of folks not paying through illegal copies. Who knows, maybe that percentage is higher than Radiohead.
It may be easy for the band to say that although 62% of folks didn't pay, and those that did paid well below the average album cost, they took a huge revenue hit.
It may also be easy for the band to say they were more profitable than their record label releases as there was no middle man and no marketing costs apart for the mechanics of the online store and a PR release.
It may also be possible that they will loose their shirts on the album, on purpose, assuming that the goodwill generated will lead to bigger venues and ticket/merch sales in their next tour.
You can say a lot of things. But at this point the only thing we know is it's too early to make a final judgment.