GoPro Uses DMCA to Take Down Article Comparing Its Camera with Rival 13 years ago
You only have to look on YouTube for comparison videos and you will see that the Sony is a far superior camera. Especially the steady shot functionality which should be mandatory for "action" footage.
This is an obvious sign that a company is scared of their shitty product (see the recent LayerVault fiasco).
Also, DigitalRev is not the type of digital publication you would want to get on the wrong side of. They have a huge consumer base.