Generic use mobile devices are always compromises, that thing is not: it's huge! The chip footprint is 8 times the footprint of the current TI chip, and that's what matters here (as long as a minimal level of performance is reached) -- anyone interested in high performance can just buy an external device.

If we look at the current crop of TI offerings, as we should for future products, the difference is actually 15 times (25 mm2 vs. 381 mm2). I'm sure the power requirement difference is in the same direction...