I really dislike when Superman is shown to instantly become as weak as a regular human under red sun radiation. Batman or Lex will deploy a devise that produces red sun radiation and suddenly Supes is completely powerless. So many writers seem to forget that Superman’s Kryptonian physiology would still give him some super strength and durability. Krypton was said to have much stronger gravity and a harsher atmosphere than earth, so Kryptonians have much more dense bones, skin, and muscles to compensate. Superman would still be a tank even without yellow sun radiation. Probably not Golden Age or “tee shirt and jeans” Superman levels since that version had still been absorbing yellow sun rads for 20 or so years, but way stronger than an average human. It’s the John Carter effect.

Have their been any recent issues where this was brought up? I recall an issue of Superman/Batman from a few years back where they had to go to Kandor. Batman needed a reinforced suit to compensate for the increased gravity.