Maybe if one is
much lighter than a typical cue.
Wrong again. It would be wise of you to defer to my extensive experience with jump cue and jump shots. I know that is something you might find distasteful but I guarantee you it's true.
Let me state this again:
You can have two cues which both weigh the same. Both with the same tip brand and hardness. Both are "normal" playing cues and ONE of them will be great for jumping balls and the other will be terrible.
"Playability" is subjective - I prefer less squirt; others prefer more. Squirt is an objective performance difference that can go either way for "playability".
pj
chgo
Well then based on that alone there IS a difference in cues. But it's more than that. Cues are not simply the sum of their parts. They can be tuned in a sense by which parts are used. That's why some cues just feel better than others. Does this make a difference in performance? To a degree it does, to what degree is not known and of course highly debatable.
Still though I very much doubt that you would go into battle in an important match with a stock Kmart cue. Even if your current cue and the Kmart cue were put on a machine and found to have very close squirt properties I still think that when the outcome is super important you would not use that Kmart cue if you have a choice.