I think this would be a fight that wouldn't ever end. And it would be Superman who would decide to say
fuck it and bail. Hulk doesn't tire and becomes ever-stronger and -bigger the more riled he becomes.
As far as Superman chucking Hulk into space, well, one problem. Hulk would never allow Sups to grab onto him in any manner that would allow him to be tossed out of the atmosphere.
Superman is essentially a god, but Hulk is the worst imaginable foe. The more he's beaten, the stronger and more enraged he becomes. Truly a nightmare. Even for Superman.
Like I say, Superman would eventually see the pointlessness and just bail on the fight.
This clip has it right ...