Fighting area- A planet twice the size of earth's sun, and is mostly rock with the occasional mountains the size of Mt Everest.
Neither of the two are holding back, they're full out.
No dimensions will break with their hammering punches, they'll only swing through the air and collide with the opponent.
Sorry i'f i havn't been elaborate enough, ask if there's anything els i should add.
Let me know who will win, and give me an explanation as to why. (If possible)