Drew Miller sucks, R2 doesn't. Great trade for the Ducks.
I don't know much about Drew Miller, I hope he doesn't suck. But Arty just hasn't ever really been useful for much. His size and speed is seductive, and he certainly can hit, but he's terrible with the puck, doesn't have much aim on his shot even though he can put some charge into it, and takes tons of penalties (even when he doesn't commit them). Besides, we got a 6 and half footer in the draft this year to replace him as the team tower. I'm pretty neutral towards this trade. Anaheim fans will enjoy watching his hitting but will be left underwhelmed when they take a close look at his actual production.
Better than Drew Miller... Though, the 3rd could be traded to get someone better, or draft someone better than both.
I don't really know anything about Drew Miller so I can't comment on him.
R2 is a project and could still be something decent. Skates like the wind, big big hitter, zero hands. Watching him take one timers was like watching a kid new to hockey trying to wind up and take a shot, he looked like he was on the verge of falling over. He has great size and can use it to his advantage but has a rep so he ends up taking a lot of penalties, happened a lot last year on a lot of clean hits.