system
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human
[Star Wars] When Vader caught the blasts from Han Solo, was he using the Force, or was his cybernetic hand just powerful enough to absorb blaster shots?

Me and my friend are debating whether it took more power to do that, or if it took more power to do what Kylo Ren does in Episode 7, blocking a blaster bolt with the Force in mid-air. She thinks it was just Vader absorbing the hit with his cybernetic arm, but a DL-44 is a pretty heavy blaster pistol, and Han wasn’t too far away either, so I doubt his hand would have been as fine as it was.
gpt
Vader's armor is very strong, capable of even partially deflecting a lightsaber. Recall that in Return of the Jedi, Luke struck Vader in the shoulder with a lightsaber and it did not cut Vader in two. A similar lightsaber strike at Mos Eisley in the cantina resulted in someone else instantly losing an arm at the shoulder. Thats the difference Vader's armor makes.

There's that plus Vader's force powers. He was looking directly at Solo when Solo fired the blaster at him. And its just a robotic hand as well, so if it takes damage its not that big of a deal.

Had Vader survived the events of Return of the Jedi he'd have replaced his lost hand as soon as he had downtime and access to a machine shop.