There has ALWAYS been a frustration on how DC has officially seen both his powers and his weaknesses, as some have him keeling over at sight of a rabbit pulled out of a hat, others have him getting weaker exposed to magic, and some see no magic wealness at all!

Some have him right away stripped of powers exposed to red sun, others that he can function for several hours, few day under it...

Some have Green K has making him weak and sick, bit still able to foght thru out, others that a Green K ring knocks him on his hanny and almost kills him off...

Still think that he should be always somewhat super, maybe exposure to red Sun has him ONLY using his natural power levels, and magic and green K can bother him, but not fatal to him?

Side question...

Do death of superman by DD never happened?

So there never were those other 4 superman running around?