I've got a Kala KA-C concert and a Brunswick BU5T tenor and BU5B baritone. Due to the size and stringing/tuning differences it's difficult to do a direct comparison.
They're all good quality nice sounding laminate-wood instruments and would have no hesitation in recommending any of them. For me, if I was making the choice again, I'd be more biased by colour and overall style details than brand name, between these two makes and model ranges.
Ill play 9-ball on a Brunswick. Ahh ...reminds me of my college years ..when actual, smoky, darkly-lit pool halls existed. Now these 'pool halls' are half restaurant half arcade and half social bar w some crappy table-clothed, warped tables where all the balls drift and stay towards the rails.