All iPads Will an M-Edge incline case for an iPad 2 & 3 work on a iPad 4

[bladerunner616]

I found a great deal on Incline cases at Tanga but they day they are only for the 2 & 3 but I am getting an iPad 4.

Are the dimensions really that different that they won't work?

I looked at a comparison chart and it looks like it should work.

Any ideas?

Thanks.