Not all models come with abs and tcs.
Not massive difference to be honest. Iv had both. Still got my jdm EG6.
Engines are almost the same. Jap b16a has slightly higher domed pistons upping the CR to 10.4:1 and the cams are slightly longer duration than the EU b16a2.
LSD was an optional extra and is not in all of them.
Apart from the gathers speakers, some with extra center consoles and arm rests that's prity much it.
I have heard that the jdm b16a's are generally build very well usually producing their factory 170ps or slightly more in some cases. But most EU b16a2's rarely produce their 160ps and end up more around 150-155ps mark when dynoed. But that's just hear say could easily be bull.
I didn't notice a massive difference when I got my jdm one. Well apart from the big chunk onto of my insurance for having an import.!!!