Doesn't really make much difference does it as they both effectively sold out - one territory or 923, they couldn't have sold any more even if they wanted to. PS4 had first launch no competition advantage in the worlds biggest console market. Xbox always has been and still is the underdog in the console market with Sony dominating in every market other than the US, which I guess is why PS4 launched there first concentrating every single PS4 they had available into a market they knew would buy them all so they didn't have to compete against an already selling X1.
In any case it's funny to see the "OMG Sony rocks - PS4 sold 1million PS4 in 24 hours" shortly followed with "OMG MS only sold more than 1 million XO in less than 24 hours" <insert string of excuses here> from the usual suspects.
It certainly beats the predictions of 700k tops that have been posted around here after Sony announced 1 million. PS4 is always going to outsell XO just as PS2, PS3 etc outsold XB & 360, until recently it pretty much had a monopoly and is still the incumbent.