Now that PS4 and X1 are both going to be $399, which will now sell better?

[UltimateUnknown]

I think it'll be close in the US/UK, but I highly doubt Xbone will dominate the US/UK.

Pretty much everywhere else PS4 will dominate the Xbone. So overall, PS4 will win worldwide, but at least now MS won't be left in the best in every region.