How is UX profession different from a BA role, though both work to bridge the gap between IT and Buisness ?

What does it mean to be designing "User Experience" and looking through the lens of the user ?
Do BA's think differently from UX engineers ?
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Like this, I had several questions in my mind related to UX and BA profession and the technique they use to tackle real time business problems.

Came across this interesting interview article between Laura Brandenburg ( Independent BA consultant ) and Patrick Quattlebaum (Chief Experience Officer at Macquarium ) and yes, It did answer many of my questions.

http://www.bridging-the-gap.com/what-a-ba-should-know-about-the-ux-profession-interview-with-patrick-quattlebaum/