Let's not understate how big Mariah was in Japan though. She was the biggest foreign artist ever by far. I once saw a chart freak say that Japan was the Beatles' most relatively impressive market and she's outsold them there.
DJWS is too hit or miss for me, though. Like yeah, he did good with Electric Chapel, Do What U Want, and Government Hooker but he underwhelmed as an Executive Producer.
I didn't think anyone could come close to capturing the greatness of Dido's 'Here With Me', but Slayty Perrysus made me into a believer once she crafted this year's best song, 'Spiritual'.