I say it's far less than that. Anyone who has bought a computer in the last 3-4 years is probably familiar with dual core terminology. At it's most base, ignorant level the techno illiterates think "hmm, two must be better than 1". Same impact as when we talk the overkill of 8mp or 12m cameras - it's has mostly a marketing impact but the impact is real. But it's not dual core that's going to be the dominant factor, it's LTE. Speed is a huge driver, if it wasn't we'd all still be using dial-up for free over home land lines.