serious suggestions1. Its probably not played much in TDM, but more health packs, and more rocket ammo on q2dm7
From a duel perspective dm3 can be a very slow paced map with both players making very deliberate and highly defensive moves most of the time. Oddly, key points in dm3 duels seem to revolve more around those few times when Mega or YA draw one or both into comitting to dangerous courses of action, than the peekaboo rails or spam rockets that knock someone down in terms of health/armor to the point that they have to flee or be killed very quickly.
Long distance BFG is easy to dodge..... to say that BFG is easy to dodge, you are saying that it is easy to avoid EVER getting close to someone, which if you want to run all day then yes, BFG can be indefinitely dodged. but, BFG can be a little more problematic than you think, aiming down works well with it.
in keeping with what haunted is saying above, at the very least BFG is a great way to make someone in a duel hold back long enough that you can run in and swipe the RA or Mega and get a crucial second or so during which you can flee with your prize and not take much damage.if you're up by cg or something and the opponent lets fly a bfg blast up that way, you'll prolly step back into the shard hall to avoid getting splashed.. bc the blast is slow moving you may have to hold position for a second or two until it hits. At that point you better have gl and spam it very effectively down towards RA to deny it, because nothing else works very well when you're behind cover like that and they can quickly retreat toward RL after the grab. BFG is definitely not a finesse weapon, but the fear of getting hit hard with it can be.