>Teleportation as argument
Assuming Chouku doesn't use this but GTku does is as likely as happening the opposite.
GTku can't hold any edge in power here. Even CSSB is above him in the food chain, and UI is so above it hurts. Chouku would blitz GTku no matter what. The argument of Goku dragging fights out isn't existent in Chou, where Goku always tries to get rid of the opponent as soon as possible. This argument is so idiotic, outdated and wrong.
I also remember no instance where GTku absorbed Ki from an enemy rather than being helped from his friends and family to reach the peak of SSJ4 (which for starters makes no sense that 4 SSJ1 could give a significant boost to a SSJ4 >_>).
GTku let Syn become Omega, and even feeded S17 with more ki before he realized the absorption gimmick (even when he had the same experience against A19 >_>).
GTku has never used the Kaio-Ken either. Assuming he'd because of BS Ki Control gives the opportunity to Chouku to also use it because of the same reason. Especially when UI goes over the mastery of body over mind, not wasting any movement and by extension, energy.
More experience is moot. He has a few years training with Uub and most fights stomping people. Chouku, albeit younger, has better experience by dealing with different opponnts, having to learn different fghting styles and becoming more self-aware.
Low Regen is shit here. It wouldn't prevent the inevitable one-shot.