I don't have the SP1 or 2, but it's hard for one to know.
-> IPS glow is a normal effect on all 4 corner of the screen. It's a limitation on IPS panels. Many confuses it with back light bleeding.
-> Cameras amplifies back light bleeding and IPS glow effect greatly. You need to get a proper digital camera and set it to manual, and properly configure it to take a picture that looks exactly what you see.
-> Back light bleeding on IPS panels is only expected to be visible on entry level IPS panels normally on desktops... I don't know on tablets... it could be a common issue due to the size. of the device.
I mean look how thick a high-end consumer grade IPS panel is:
So it could be... to some levels.
But if that picture is correct, it sure doesn't look good at all.
That looks like a TN panel, in terms of back light bleeding.