You have your numbers on the "minimal acceptable frame rate" wrong. Oculus Rift and HTC Vive are both 90 FPS devices. At the time of the gear vr's release, it

You have your numbers on the "minimal acceptable frame rate" wrong. Oculus Rift and HTC Vive are both 90 FPS devices. At the time of the gear vr's release, it was only compatible with the Note 4, which could only display in 60fps (Not sure about the newest compatible phones, but I would think they're still 60 FPS max)