You're right on that, I thought he was just blocking/absorbing it as I haven't seen that scene in a while. Although, him actually deflecting straight back at the shooter is something new and actually really cool
It's also the first time he's deflected blaster bolts with his lightsaber as Vader, not including what he did as Anakin. And on top of that even deflecting multiple bolts back into the rebel fleet troopers. Cool additions to his arsenal. [emoji106]
Haven't gotten a chance to see RO and ANH back-to-back yet, but now that you mention it, that is a really neat contrast. I hadn't thought of that before. Shows the big difference in skill there between Vader and Luke indeed.