There's a 4,000 point difference in benchmark scores,
When you use 2 graphics cards on your PC the benchmark "shoots" up as well, but in real life situations the benchmark is not true to the actual situation. Benchmarks are accurate in seeing a small snapshot of what is under the hood - it is NOT however a good tool to see how well the device will actually run things.
Look no farther than the thread on the GB about running two 6000 GPUs, your benchmark will show you thousands of points over a single 7000... yet you know what? In real world experience, the benchmark is complete trash.
Stop throwing around Benchmarks as the end all be all, benchmarks can not tell how well a processor runs with the experience, it can just stress test the processor itself, it's a stupid comparison, and once the moto x comes out there will be at least 1 or 2 benchmarks that come out that are optimized for the moto x and will actually show the moto x ahead of the nexus 4.
Stop being ignorant and basing every single one of your decisions off of a "tool" that has never been 100% accurate, even on windows, which the tool has been on for over 10 years!