BoA is the obvious winner here. Namie can dance, sure. Twist here and there. A bit of hand movements. Shake here and there. That's pretty much it. She's too smooth and slow to me. While her songs could have awesome edgy dance routine, they tend to be the same and really boring (WoWa anybody?). Especially in her live performances. BoA in the other hand, WOW! She has energy, power. She's really edgy!!! Nobody can beat BoA.
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http://youtube.com/watch?v=hgxhUWZJ5tQ - MK dance ya'll + check out 3:15
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http://youtube.com/watch?v=TIBAB-MvR1o
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http://youtube.com/watch?v=KZ9wJ1ocK1A
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http://youtube.com/watch?v=lLALnwWAHb0
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http://youtube.com/watch?v=IbooPc0eZV4 - I love this!
And for those who say she can't sing while dancing:
http://youtube.com/watch?v=WDtgCq97KN4
Can Namie pull that? No way.