Sorry: D2:ED is an action/RPG because the combat is not like dragon age, is not like fallout1-2, is not like AoD...(for example);
Point and click controls, or turn based combat, do not an RPG make.
but is based also on our abilities with keyboard-mouse/gamepad(x360)...
Is it? Based on what I have seen so far I certainly fear that may be the case, but I have not seen any conformation.
The term "action" indicates only the combat style...nothing more...
Diablo uses a point and click combat style (not primarily the player's reflexes), and that is the 'gold standard' of action RPGs, which everything else tends to get compared to.