Can someone please explain...

...how much these recent Batman animated movies are related to the comics?

I haven't read the comics related to the recent Batman animated movies, but since the movies are in the same continuity as Flashpoint, and the Justice League movies (which are pretty much based on the comics), I assume this one and Batman vs Robin are also based on the comics. But there are way too many characters dying, although they are not dead in the comics (or am I wrong?). And apparently, Batman's secrets are no longer secrets.

I also get that the new 52 divided each lead hero into their own reality and that Batman has nothing to do with the Justice League continuity. But it seems that the movies do make them intersect, which suggests even more that all these movies are based on the comics. But so many things happened in Batman vs Robin, and Batman: Bad Blood that cannot be undone.

Can someone please clarify this for me, thanks :)

That's how it starts. The fever, the rage, the feeling of powerlessness that turns good men... cruel