Free Step Dodge

<_< Looked more like Street Fighter IV's ultras to me.

Bit of both I guess got the ultra invicibility armor but looks just like a power blow

Although, the difference is in Tekken 7, when the character uses their Rage Art (special, ultra, power blow), if the opponent blocks it (or if the user misses it), it can't be used again. So it's basically do or die, and can't afford to miss it, while of course in DOA5, the red flash on the health bar won't go away unless connecting with a power blow, or a power launcher.

Not really, all powerblows knock back certain ones have different properities such as lili's who knocks you right in front and ect. Also powerblows give you frame advantage. Those are bad enough to give you a free launch of your choice. But if you want to argue about a 3d cinematic special move yes it's quite similar