Realistically there's nothing Batman can do to HT before Torch vaporizes him. But Torch always holds back because he doesn't want to accidentally hurt anyone.
Even without his Nova attack the Torch can slag the Batmobile and Bruce's suit, he can make decoys of himself to throw BM off, he can draw the heat from BM's body freezing him in place, etc...
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..even the outer hells are indifferent matters for they bow only to potent and archaic Nodens.
Conversely, just to play devil's advocate - Bats has massive home advantage, has weapons on him that would take Torch out (no prep), and has dealt with heat guys before - let's not pretend Johnny goes around and does any more than blast away in 90% of his fights.