I think skewing off of a particular comparison delving into mobile and other avenues is a bit like trying to compare John Deere to Chevy. How do you make that comparison, one makes autos the other makes farm equipment. A direct comparison would be Ford cars to Chevy cars or Ford trucks to Chevy trucks for it to be meaningful. Amd does have an edge for apu's, but intel doesn't rely on nvidia for anything.
They certainly didn't buy up nvidia the way amd did ati. Everyone wants to say intel is nothing without nvidia, is amd special just because they slapped their name on ati? They certainly had nothing to do with ati's success or developments. At this point, since amd bought out and took over ati, who else would intel go to for graphics? Not amd and that leaves nvidia so if amd fans aren't happy about that, they only have amd to blame. Maybe had amd bought up nvidia instead, it would be the other way around.
Intel integrated graphics are pretty low end, but if amd didn't have an already established gpu manufacturer to make their integrated graphics for them I think it would look a lot like the cpu comparisons. I'm sure if intel had nvidia gpu's embedded into their apu's they'd easily surpass amd there as well. I have a feeling it was a good move for amd to pick up ati, that's pretty much what's been carrying them both in the gpu and apu market. Without ati, amd would already have gone the way of cyrix.
Apu's have a place and a time, but they're not fully capable entities for serious work whether workstation or gaming based. Which is why desktops continue to survive despite being forecasted they'd be long gone by now. Phones and tablets are cute for travel and taking pics, doing a few doodles or playing flash games on fb, but beyond that they just lack the horsepower. That's more or less by design. You can't have both power and portability in the same unit due to heat restrictions, size restrictions, power restrictions (battery life).