So I've been thinking about starting this topic for a while. Despite what the topic title might suggest this isn't so much about who would win, rather its about which is your favourite/ who you think is better.
I far prefer Batman for a few reasons, firstly he has no superhuman abilities he just uses his own skills and money to do what he does. He has the same weaknesses as any other human. Superman on the other hand has superhuman abilities (he can basically do anything) and only one weakness (Kryptonite) yet he fails just as much as batman if not more.
Superman is also way more of a sook than Batman and far stupider. I think even DC prefer's Batman, after all it is called DC (as in Detective Comics, which Batman appears in) rather than Action Comics (superman comics). Batman is also far more intelligent and can get by on that alone even when he is old and crippled (which doesn't really happen to Superman yet he is far more ready to give up on being a superhero anyway).
Aside from the way I've been brought up (my dad is a big comic book fan, particularly Batman) a lot of my opinion on this is based on the graphic novel "The Dark Knight Strikes Again" (or DK2) by Frank Miller, which I highly suggest you read if you can.
So yeah, you don't have to be a huge comic book nerd or anything just give your opinion and give reasons if you can, If this is popular enough we can probably ask similar questions like Marvel or DC for example.