Barf, just because it had more cores doesn't mean it's faster
Android is Linux, just run Linux on a £350 laptop and underclock it to Tablet speed to make the battery last longer.
I have an E-350 here with two cores, but I bet you it's still beaten by a single core Pentium 4 in a good few applications. Processors aren't as simple as buying as many magical numbers they hype about.
If you could use a Tegra 3 chip like a 2500k then I don't think Intel would be in business.
If I tryed to sell you a bike with four windows, a boot, two tyres trailing along behind it on string and stuck indicators to it with bubblegum would you not tell me I was wasting my time and should buy a car?
Anyway, if you've got £500 to spend on a brand new "tabtop" as fast as laptops from 3-5 years ago, then I'm pleased for you.