Keep in mind this is a budget keyboard.
Korg has high end actions in their high end boards... currently Kronos, and before that, the same action in the M3. Their lower end workstations (Krome/Kross, and before that, M50) use lower end actions.
Yamaha offers the MODX sounds/architecture in a higher end board, the Montage. MODX is a lower end version, with a lower end action.
So from either company, you can get a better action if you want to pay for it.