Yes, but 50% isn't all that noticeable. Might not matter at all in the real world. Even the WiiU is less and that might not matter either.
Neither one are where I think they should be - should be 2.5Tflops or close to it. This gen GPU's are a disappoint.
But it's what you can do with your tools not the size. And both Halo 4 and Uncharted 3 have shown you can make fine looking games on the old hardware.