Front facing camera shows things at an angle

Do you have the device in landscape mode? If so, the fact the camera is off to your left can explain that, if you are very close to the screen. When the iPad is in portrait mode, the camera is centered on you, since it is as the top of the screen. If you were to turn it back to landscape, but put the camera to the right, you would look just the opposite.

That probably has to do with the difference in size between the two devices. I see the same behavior on my iPad, that is because we tend to align ourselves with the center of the device. If you do that on an iPhone, we are not as far away from the camera side as we are with the iPad. It is all about the angle. There is nothing wrong with the iPad if that is what you are asking.