» Sun Mar 06, 2011 11:17 pm
I am not sure of the specific formula that companions use to equip weapons, it may be DPS, but they will all use explosives including the Fat Man if you give them any (don't). This was the same in FO3.
As mentioned already, Veronica's EW skill does not scale to 100 like other companions ranged skills so she burns through ammo with less return than other companions. My opinion is that the companions make the game too easy and that the extra firepower is not necessary. Setting Veronica to range, which essentially nerfs her compared to Unarmed, is certainly a playable option but one thing I would not give her is a plasma weapon. High fire rate with lots of visible misses (at least with bullets, the player is not as aware of the many misses the companions are capable of) makes for an annoying companion. All of the companions spam shoot even when odds of hitting are low, it is just more obvious with plasmas.
I would not give her the Gatling Laser as one poster mentioned. That gun is a shadow if its FO3 awesomeness and a poor choice vs hostiles with moderate to high DT. Personally, I would only equip the Gatling Laser on the Courier and only when stacked with the EW perks.