Seems you did not understand the question or reply. The question was about how a cue plays when it comes to the butt portion. The only part of the cue that actually affects performance is the shaft, and the tip. How a cue feels is the full build of the cue, but that is all personal preference and no one cue is better than another for that, depends on what people like. No cue "plays" better than another from the joint back, that is just talking about feel and balance. How a player makes shots is all in the shaft and tip. So the answer to "how the butt of a cue plays" is all personal preference since there are no performance numbers that matter there, the butt of a cue does not play well or not, it's how it feels.
There is no actual performance benefit to any type of butt without the shaft. If I stick my shaft on a $600 custom butt or a $50 Chinese made one, I will still pocket balls the same way, I may just not like how the cue feels in my hands with a cheaper one. Although that is not always the case, my son has gone through a bunch of $500-$1,000 cues and keeps going back to a cheap McDermott Lucky cue butt I found left behind at a pool hall for free, it's like $70 to buy the full cue including the shaft. He just uses his favorite shaft on it and is happy with it.
