Well, Iggy must not have seen Britney's award show performances from back in the early 2000's because if she thinks that was oldschool Britney, she is fricking delusional. Though I will admit, despite her usual lipsyncing, this is the most energy I have seen from her in years. She looked lively and very much in the moment.
It seemed like her performance was pre-recorded and heavily edited. The camera kept cutting away from her whenever she attempted choreo so I found that suspect. It was just like watching the music video all over again.