HTC One vs. iPhone 5 camera shootout - Crave - Mobile Phones - CNET Asia
Rather than zoom to 100% to see the detail loss he complains about - zoom both of the polka-dot girl pictures to the same physical size (iow - the usual browser default) and look at the details in the background, especially the blue accents on the housing in the northeast (sorta middle upper right) of the girl/statue.
As for final loss of detail, I'd really like to see what this does with less compression, something I'll expect from the dev community.
All in all - worth a look at the article. (Asia Cnet is so much better than ours, seriously.)