It seems that other stan bases are more pressed about this situation than the Army themselves Congrats queen If anyone other than Britney deserves the record then it's you
I have seen that the Army is very chill with Britney record being broken because Adele is the one doing it
No other Mainstream star has as much market appeal as her, that's for sure.
The only problem is that to boost a first week's sales you need hype,anticipation,fever(her market already has that) bit to reach a number as high as 2.4M she would need to do promo as hard as Gaga did for Born this Way,and she doesn't have the time to do that and it wouldn't fit the persona we know as Adele.
I still think she will obliterate Britney's record, however my point remains the same, considering she released the BIGGEST selling album of the 21st century(and that's not going to happen again) THIS era is music's biggest chance at beating that N'SYNC record, at least for a decade or so.
Who could be other artists with nearly as wide market appeal as het? Just Bruno or Taylor, and it's not even close