superman would take hulk down long before hulk became strong enough to take him down.
pre crisis supes (love him or hate him) is imo the ultimate superhero in terms of power, nobody in dc or marvel comes close...
if it was post crisis supes we'd have a fight...
Most comics follow the laws of physics to at least some extent. The early superman comics do not.
most don't actually. if you want scientifically sound watch star trek.