I'll grant you the following: God of War doesn't push you into really learning the mechanics. However, even in Ninja Gaiden, it's possible to just use the same, boring tactic over and over again on the higher difficulties. NG3RE can basically just boil down to you mashing dodge, and 360Y on Ultimate Ninja, if you so please. And likewise, Ninja Gaiden 2 can just boil down to just constantly using the claws to use Flying Swallow to Izuna Drop. Exploits and spams are in nearly every action game out there. God of War is no different.
That doesn't mean that the combat is not deep. Trust me, if you actually dig deep into God of War's mechanics, and learn about how grabbing, collisions, ring-outs, and learn each way to beat each enemy in the most effective way possible, you'll realize that there are a LOT of details.
Back to new God of War, I'm not expecting it to be like the OG trilogy. I just don't think that it lives up the OG trilogy's combat, nor does it stand particularly well on its own. Everything in this new game just feels so restricted.