If apps like that are available for android phones, then it should work on your android tablet. The iPad 4 has a very high resolution so of course your graphics are going to be shit, however Apple's implementation of the PowerVR SGX 554 GPU offers up similar compute ability to the Nvidia Geforce 310m (about 3-3.5 years old). RIGHT NOW, you aren't going to get graphics like on a PS3 but the hardware is just starting to come out and developers have been targeting older platforms like the iPad 2. Nvidia expects that by the end of this year tablets should match the graphics of PS3/Xbox360. I have a Google Nexus 4 with a Qualcomm S4 Pro SoC and if you look up Qualcomm's demo of the chip you'll see that it offers graphics similar to the first batch of PS3 games. It's not exactly the same kernel, Android uses a heavily modified version of the linux kernel.