Ah, I was under the impression that every change the GCRB team made had to be cleared by CGL- I will try and find a source on that, since it's just something I've heard. Edit: (
Sauce- they differentiate between errata requests to CGL that Pegasus has made, and approved errata. They also talk about consulting with CGL before making changes.)
I don't mind if they're given creative latitude, and something that minor isn't going to be a big deal for a group. But if there's a split on something like Unarmed Damage, or Anticipation, there could be contention in international groups.
I guess we can just say that the English one is official because it's the main, and comes direct from CGL (Rather than just being signed off on from CGL), but then what happens if the GCRB fix is "better" than the English fix? I guess it's GM fiat, like you said.