So far, the Kabini A4-5000 losses to the HD4000 on a Ivy Bridge ULV cpu by a fair margin, on every test i see, the HD4400 results on this Sony Vaio are strange, but you have to agree that should not be happening, and yet still the Kabini is a bit behind. I dont really see the A6-5200 coming up any better as its primary memory limited.
The I3 and I5 ULV are just better in GPU performance, there is no way to argue that because all benchmarks so far gives that impresion, but on CPU the Kabini is quite close by. Depending on price if cheaper than a I3 it could have a market there, but i have no idea about the kabini price.
Now, Intel is selling the Haswell Celerons at a really cheap price, and GT1 should come with worse IGP performance, thats the real Kabini competition to me. Temash is more paired with BT, and on that, we need to see more benchmarks before taking any conclusion on IGP side, as Temash CPU bottleneck its igp.
BTW, poor HD4400 performance on Sony Vaio Pro 13 could also related to single channel memory, even a HD2000 is bottlenecked by single channel memory, Intel IGP need the dual channel to give good numbers, That could be a critical point in Kabini/Temash favor while compiting with Celerons/Pentium and BT.