Man, if the jumping in that game bothers you, then please take a close look at Batman stance.
For me the jumping is ... well it's not the best thing that could happen, but what bothers me more is the death-animation. They fall, they stand up and they fall again. The heck is this?
Other than that I'm actually very, very, very, very, very impressed by the animations overall. Looking at Solomon Grundy and Harley Quinn ... they really do behave and move like nothing we have seen from the clunkyness of the NRS engine before. Now it looks much more fluid and that's awesome.