Squid and I were talking\bitching about it here.
It wasn't as bad as the two of you make it out to be.
Not every art style is going to be Justice League/JLU but it was fine to me and I usually point out bad animation.
I liked it mostly due to it being a Flash movie and the touching moment at the end w/ Bats. Anything with Zoom is cool..
I agree that it was pretty violent but I think most kids can deal with that level of violence nowadays.
It wasn't the best DC animation movie but it certainly wasn't the worst.