First of all (how rude of me to neglect this), thank you Editor, Burn, and N_V for solid, quick answers. Thanks especially to Loki for the plethora of information.
Regarding weapons, I noticed that the turret-mounted gun had a wider range than the dol-laser rifle (which I had already given to Nightchase to so-so effect) but guessed that there must be some reason--beyond the seemingly slim chance at doing very heavy damage--that the T-MG was coming in at 4,200E more. (Meanwhile, I only mentioned Sunbow's disappointing accuracy because of the randomness factor. He's shot much better in other tussles, although not of late.) Did I really pay all that to "step up" from <--moderate--heavy--> to <--light--moderate--heavy--very heavy-->? Are you sure it's as simple as that? In most games, the narrower damage band would make for the more expensive weapon--because, as noted, it is clearly the superior weapon.
On a related note, do weapons have anything to do with the damage you do in alt-mode? Or is the damage you do on a Strafe related to Firepower and the damage you do on a Ram related to Strength? In which case, ranks in the tactic are tied to frequency of transformation whereas ranks in the associated skill are tied to efficacy?
EDIT:
This is why I've had a hard time taking the "scientist" type seriously. I could see continuing with him if I was involved in more organized play but . . . sigh. *To anyone who clicks the link later on and is wondering why I am trashing a SPD 2/Avoid 2 Lvl 0 as a "scientist"--it's because at the time of this mission log, the character was INT 1/Repair 2.