I'm okay with it opening low as long as it continues to grow. As much as it hurts to not get a #1 debut, longevity really needs to be the focus this era,
Anyways, I have my reasoning for my prediction. Kinda using Miley as the blueprint for it. She debuted with 191K in 2010 for Can't Be Tamed and then did 214K in 2013 with We Can't Stop despite Can't Be Tamed not being a big hit. Work Bitch is comparable to Can't Be Tamed (debuted with 175K) and both sold around the same in the US (1M) and WCS came after a 3 year break and Miley not really having a hit for 4 years. PG is coming after a 1.5 year break and also 4 years since Britney's last solo hit. Both songs kinda incorporate that urban sound that is a different direction from the dance Pop leads that preceded them. The similarities are there.
And both songs had BBMA promo (Britney performing and Miley presented and mentioned the song). Viral video next!
I'm so excited now. The cover would be nice but I'm more excited for an actual press release about where and when the song can first be heard. Hopefully iTunes Sunday night.