I had the opposite experience.I mean, the games have different speeds, but felt similar in a lot of ways.But in both games you have one button for regular attack, you had a menu from where you could choose your spells(which had a similar aesthetic) and where you will likely be able to choose your summons too.
The difference betwenn the two games are mostly the speeds between them.
But hey, that was my experience.
See? Here I'm totally cool with you. And I'll say more: I didn't thought about having a menu to select certain actions like magic, items and summons. And you are right: it's kinda similar. I guess it didn't struck me as hard as you though.
I don't know... I think KH is really based on movement and fast paced action. And that's why I think speed and things like being able to jump (which in turn gives you thinks like air combos) makes a big enough difference for me to not feel this game like KH in any meaningful way.
Of course, this is my experience as well.