Yeah, but Jojo comes from this sort of... The best way to describe it is if you look on videos of her songs on youtube, there are videos where her octaves are listed in the title. Not just the tags or the description, THE TITLE. It's so clinical, that I totally understand just why she HAS to sing that way. It's this thing where it's constantly over-analyzed to prove herself.
Likewise, Aiko recently posted this video of her live where she sang with a band, in which she seemed very overwrought with trying to be 'soulful' and the comments were all relating to "CASSIE CAN'T SAAAANG LIKE HER! LOOK AT THE PERFORMANCE!" whereas I think most people who really appreciate Jhene is because of the ethereal Cassie-like qualities of 'Stranger'. It's a huge divide between the traditional R&B fanbase who are looking at R&B almost in a Steve Vai 'vocal-shredder' sort of way, and these people who are looking for stuff that's pleasing on a textural, sonic level.
Also, briefly; Jhene apparently made a Japanese version of "Stranger" for iTunes... Which makes TOTAL sense to me, as I hear it more like a J-Pop record than an R&B record. It's way more Sylvian & Sakamoto than anything to me, that little chorus melody? I wonder if there's ever going to be a proper bleeding over of J/K-Pop into the sort of 'witch house'-themed R&B popping up here and there.