It was nearly impossible for Sandy Bridge graphics not to improve on the previous generation.
As far as your arguments of Llano CPU sucks, doesn't advance, that quite possibly the weakest set of justifications for a hate-on I've ever heard, without any evidence to even remotely back up the claims.
Without independent benchmarks, hardware samples in hand, and pricing, it makes absolutely no sense to say Llano sucks. What if there is a quad core APU with 6600 performance level graphics for $200. Build that from Intel and it costs you much more to get the same platform performance. Sure you can buy a single product for the same money, that will have the ability to output to a display and have better CPU performance in some benchmarks, but put that in someones hand who wants to do everything on a PC and they'll ask for a dGPU. There goes, power, performance and price advantages, as well as form factor. But it does give another sale to AMD.
Intel based PC's don't always have discrete graphics, but when they do, they prefer AMD.