Who is stronger?

Darth Vader stands in a dimly lit chamber with two stormtroopers, holding a red lightsaber, as the scene cuts to a close-up of his helmet, then to him swinging the lightsaber in a dark environment. The sequence transitions to an anime character, Asuna Yuuki, in a black and white outfit, wielding a glowing purple sword, followed by a close-up of her determined face, and finally a full-body shot of her in a dynamic pose against a vibrant, colorful background.