In some ways, we can construe this as a classic "Technology" vs "Nature" battle. Where high tech takes on no tech. It's the ultimate philosophical slash pop-culture analogy for, well, I'm sure, something...
So, basically, I'm just saying I'm curious what others think. Who exactly would win?
Earlier I wrote down this - and was even pretty confident about it. But now, I'm not so sure. Especially when I think back to that chess-like game in episode IV and the whole "Let the Wookie win" incident.

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Comments
They’re co-conspirators. If you see them fighting in public, look for something else from which they’re trying to distract you.
Posted by: Max Kaehn | July 16, 2007 7:22 PM
I heard that an R2 unit construction facility was built on the Wookies' home world. After some initial good relations with local communities, very few Wookies wound up getting jobs at the plant. And, of course, those robots are dirty to build, and the plant leached all kinds of ugly chemicals into the water, poisoning Wookie-kind. Lots of flap about mercury, too...
Posted by: HgMan | July 16, 2007 10:39 PM
In my realistic mind, Chewbacca would rip R2 apart. In a Lucas movie, R2 would ludicrously win, and would not permanently harm Chewie in doing so.
Posted by: Tim | July 17, 2007 8:40 AM
Without engaging in a byzantine escalation of obscure plot references, Chewie seems to always be working on something in the background while still participating in the main plot action. This indication of his capability to multitask, including during combat, is typefied by the dramatic melee on board the Millenium Falcon on the ice planet of Lur. Han deals with one or two of the mob of assailants, leaving the other five or so to Chewbacca.
Besides, I've got to give a hirsute brother some love.
Posted by: Erik | July 18, 2007 6:56 PM