It's the best time to release for her and B9 could maybe pull in FF's numbers even.
There's way too much competition towards the end of the year, maybe a re-release would suffice then.
#B9, even if it's good, will be lucky to match Britney Jean. I don't say that in a pessimistic way, cuz I personally think ~700K WW is good in this market. I just remember legit expecting like 300k+ or some mess and Circus teas from BJ (commercially) so I don't want others to make the same mistake.
But maybe I'll have to put my foot in my mouth come next year. Anyways, I just hope for top ten positions WW (especially since it's easier to get those before the fall) and 100k+ FW in the US (#1, unless Adele has anything to say about it ) & 200k+ WW.
Just because she had a good mood during that show doesn't mean that she actually loves the song. Did she ever even say anything about it?
I don't but the fact she looked so happy during the video and has performed it on every tour she's done since its release is all I need to know. She even performed it when she was promoting FF
) & 200k+ WW. 
It is stunning and I AM SORRY
It's my favorite song of all-time.