Honestly, this picture shows why I prefer Superman to Batman. His more optimistic and friendly personality appeals to me A LOT MORE than the moody, dark, anti-hero attitude (and to be honest, I'm kinda sick of seeing it everywhere) that Batman has. But that's the beauty of comics; different series, stories and characters appeal to different fans (I generally prefer comics with heroes battling powerful cosmic/god level foes to human vs human).
Anyway I do feel Superman is the highlight of this picture as I really like how you did his face. The hands look good as well (certainly better than what I can do) though I do feel the hand with the thumbs up is a bit wonky.
I can see that. Superman, when done right, is really hard to dislike and/or root against (I just see too many versions of Superman as too perfect, or too angsty for his character.) Batman can be depressing, or too dark/serious, but I like the grit he has, and his villains are some of my faves. He's a ridiculous human, and that's the way I prefer my superheroes (Batman, Spidey, Supes is too ridiculous). Spidey, I feel, as a good mix of Batman and Superman. But like you said too each their own.
Superman is definitely the highlight of this picture. The original version [link] , Superman looked goofy and Batman looked like the Dark Knight. Now Superman us better of the two. It also helps that he brightens the entire image and adds color. The thumbsup hand probably looks goofy probably because it's too close to the forearm (no wrist). I'll tweak it.
I'll admit I've not read all Superman stories but I have yet to see one where he is "perfect". While I agree with you about the angsty (namely DCnU), all the ones I've seen him in portray him as very human. However I appreciate I may be looking at him through "rose tinted glasses".
If anything, I feel that's more Batman, especially when handled by some of his "fans" like Frank Miller and Doug Moench who portray him as being too perfect, i.e. how he's able to foresee everyone's move and counter it and how everyone gushes over him for being "merely human". To me that makes him more overpowered than Superman and I feel I can turn all the common Superman complaints against him. However I appreciate this is Batman at his worst, but it still tarnishes the character in my eyes when writers have to derail characters I prefer to make him more awesome by comparison. I'll admit I'm a fan of Linkara, and his reviews of some Batman stories have tainted the character in my eyes (namely the ones by those two writers) and if you don't already follow him, I'd strongly recommend his review of Act of God to see what I mean. Along with Superman, other characters I am fond of - Kyle Rayner, Wonder Woman, Blue Beetle and Booster Gold are HORRIBLY treated.