Even with Batman, who has a much less damaging super than WW, I can get a 52% damage combo with super, so yeah, you're just not doing the right combo or landing your super at the right time in your combo. I know it can be hard to experiment a lot in the demo, but when you'll get as much as time...
Well in this trailer: http://ca.ign.com/videos/2013/02/22/injustice-gods-among-us-aquaman-combat-trailer that is like three days old, Aquaman still has Clash dialogues and I can'tt link you directly to the source of this Clash info, it's from a chat in which Pako Stevens participated, I saw this...
We got Clash for that, which has been revamped lately.
•Usable once per match
•Only after the silver health bar has been depleted
•Unusable with full meter (assumption, seeing as how it's triggered by pressing L2+R2 like the supers)
This picture might be from the reveal of the whole match-up campaign, the Battle Arena. The first match-up might really be Batman vs. Bane, the name of the video even is "Injustice bla bla: Batman vs. ..."
Deathstroke all day, he looks boss, his moveset looks neat, he's got a low combo starter, his story is hella entertaining and his alt looks sick.
With maybe Aquaman or Ares as alts if they are in/interesting gameplay-wise.