VR vs 360 - different scale

First I did 1 eye only on a sphere. Then I used a 3D with the default IPD 64mm. But 2D and 3D were the same for me. It was to big everything. Maybe there was a difference but I didn`t notice it. When I play in real-time this movie in Unreal , the immersion is fine and the scale is correct for example when I look at the window I can see the whole model without the need to look up and down. But from the same spot just rendered it looks much bigger. I made 6 cameras with 90 FOV with the aspect ratio of 1 so the screens are squares and stitched perfectly. I don`t know why it looks like this. Maybe it was the whole time the differece but no one noticed it?