It took Clark about 1 minute and 20 seconds to recover from the aerosol can. Despite being rammed into glass, thrown down a floor, (although taking bloodsport as an example the dceu seems to think gravity on earth is weak as hell), and literally having his head used as a chisel for concrete. he still survived. Cap interestingly has an issue of tossing enemies around* when he fights, much like Bruce, increasing time between blows (note that cap would have to kill supes because there's no way to incapacitate him in time [because as soon as the aerosol wears off his super-healing works out]). I'd say it's close, but Cap won't be able to kill Clark in time, even if the space is enclosed enough.
*If we apply MCU physics, this is true no matter how hard he punches. DCEU physics is iffy but supes did (more realistically) punch through Joker's heart (although this is in injustice). Real physics is the extreme that could lead to Cap easily piercing clark, that may not matter either because Clark's skin still was very tensile against Bruce.
I'm talking about 1 issue/episode/scene of a character that you would love to know more about. For me it's Solomon from the Lucifer series; he only appeared in one or two issues, never to be seen again.
Clark wins easily but not quickly. Tony has no feasible way of dealing damage, and most of superman's strength comes from hitting hard with speed (i.e all his punches are just a normal punch with a rock hard fist). All he has to do is blast him with lasers, tank and dodge until Tony tires out