(I'll have to mention to Rod that the board is still called ERTS here...)

#1 in UK weekly chart, biggest all-formats release of the year which isn't a surprise given the competition was basically Dying Light and a 3DS only Zelda.

The site  bfhstats.com/ tracks current online players and the peaks of each platform for the last 24 hours. The sum of each platforms peak so far is 283K which was yesterday, with PS4 ahead of XB1 (though not by anywhere close to the sales divide between the consoles), and the new consoles playerbase outnumbering the legacy consoles by 8:1.

In October 2011 EA proudly announced BF3 had sold through 5M in its first week. The actual playerbase for BFH will be higher than the peak concurrent users of 283K, but it still looks a stretch to assume it'll be anywhere close to BF3, or even probably BF4 imo.

CAG posted the details of some upcoming retailer weekly sales last night, and Best Buy has BF Hardline for $39.99 all platforms starting this Sunday, which means other retailers will match. From $60 to $40 in  under 2 weeks.