And Larion Studios predated Arena Net with their flying physics with their game, "Divine Divinity 2." Try it out. When you turn into a dragon and fly around, you get the same distortions when diving, etc. Oh, and you'll have to add Wildcard to that list -- they incorporated a fan-made gryphon mount creature into their game that ALSO has the SAME speed distortions. Although, I'm not sure on the timing; I'm pretty sure the inclusion predates the Path of Fire expansion. If you're going to charge WoW of plagarism, you'll have to include GW2 in that list as well.
Let me put it another way. . . Anet's resources for a legal team are | | this big. Blizzard's legal resources for a legal team are | _______________________ | this big. For those who don't get the visual comparison here: Blizzard's resources VASTLY outweigh Anet's. They're more than capable of consulting with their legal department and figuring out what is going to get them in legal trouble.
Yup. There are only so many ways of making an increase of speed feel visceral to an outside viewer who can't feel inertia. Manga and anime have been using things like speed lines for DECADES. And that doesn't take into account how many games, videos, and other visual media all blur areas just out of central focus for things like increased movement. I played at least two games prior to Path of Fire that had the same diving mechanic as GW2 gryphon. I thought nothing of it. And you can't copyright barrel rolls. If you wanted to try, I'm pretty sure nature, or at least the Wright Brothers started that first. Or contrails. Can't copyright those either. Or physics. Because momentum exists for everybody. Hell, I read a book that predates MMOs that literally describes the way that GW2 gryphons work using characters. . . . WITH GRYPHON CHARACTERS IN THE BOOK. Hell, it wouldn't surprise me if the books were the inspiration for it.
The thing that gets me most about this thread is that instead of applauding and hoping that WoW's player base enjoys something new and different that is being added to a VERY old game (so much spaghetti code!), instead you have a subset of players screaming bloody murder and grabbing pitchforks as if Arenanet invented the concept of flight itself. That barrel roll you see in the clip for Wow? Yeah, that's not the same thing as the Skyscale. Wow doesn't have an evasion system to avoid taking damage the same way GW2 does, so it is literally impossible to be the same thing. From the video, it looks like A) it's a fun graphic, or B) it's a mechanic to increase momentum or energy.
tl;dr: I honestly thought that the GW2 community was better and more generous than this. Turns out I was wrong.