I think this is true not just of combat, but of most elements of 4e.So, in general, 4E combat is less ruled by chance and more by tactics.
Unfortunately I don't think it's as simple as that, It causes less deaths through random chance and more deaths by punishing bad tactics.
Unfortunately I don't think it's as simple as that, It causes less deaths through random chance and more deaths by punishing bad tactics.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.