SO you give them target locks, so they can split fire. ANd he's essentially doing the same thing with his missile broadsides that I'm doing with my missile equipped crisis suits. (also, I like to take the buff stuff on the sergeant, so I'm not wasting BS 5)
Broadsides are more durable, and put out a little bit more firepower (seriously, it's just a little, it's the same number of Twinlinked Str 7). But mine is more mobile.
All the marker drones are BS5 twinlinked, which is ridiculous. I used to use 8, but I've found I never need more than 5.