Frequency response is a good deciding factor.
Research has shown that the better measuring speaker will score better (sound better to you and/or everyone else) than the lesser measuring one.
Here’s the Klipsch measured by Audioholics
The trace of the farthest back response will be the on axis response, see how flat it is? This is good.
Here’s the slightly more expensive 702 S2
See how rocky that is? Not good. (Sorry this one from Stereophile has all the individual aspects measured, port, woofer, and tweeter)
I’d say that overall, the Klipsch is going to perform better over extended periods of time (not fatiguing unlike the B&W), and will sound better for movies and for music.
Not to mention the bigger bass response from the 8” woofers.