A very interesting comparo.
I went from a 14 to a B-King, and actually find the King's gearbox better than the 14 - apart from the occasional false neutral between 5/6. The King shifts easier, and does not KLUNK into 1st from neutral like the 14. Indeed, if you hold the King's clutch in for about 5 seconds, she slips into 1st without any noise at all.
Re the brakes - the King's brakes are as good, if not slightly better than the 14's...gen-u-ine 1 finger fronts...
In general, I find the King to be better engineered and refined than the 14.....the 14 was a great bike, but like all Kawasakis she has a rough, almost visceral edge to her.
The King is really like the proverbial iron fist in the velvet glove.