They were ridiculous with Dark Side. They had her perform on the Billboard Music Awards two weeks before her adds date and then didn't bother to promote it at all. A performance on the VMA's or some other kind of big platform could have propelled it to be a Top 15 or even Top 10 hit.
Granted, some of the blame could be put on Kelly. I know she was picking and choosing what to do for promo.. but it seems RCA wanted to save all the promo for her Greatest Hits era so they just kind of threw it out there.
And they were ridiculous with Your Body. Where was all the promo for that?
They can be really hit or miss tbh, but they miss more often than they hit.