[Imp]

On the arty think you just got consecutive bad roles as in bad luck, was against an elite unit also if Para, Arty tends not to be that good direct firing iron sights an all. Not really thought about but if a fire exchange takes place between an arty piece & squad in LMG range I would expect the squad to win. Under 150m its a no brainer unless the gun gets lucky as its crew is bunched round that nice big target. The squad on the other hand unless it has a death wish will be spread out in the hex.
For a true test units must be identical as in same exp arty inf skills as effects outcome but you still need to do quite a lot like a 100 shots min to cut the random factor down.

On vehicle moving adj to runners does this help.
1) Even open terrain is not flat 50m hex the crew has vanished from sight for a moment & had enough, hes going to die anyway may as well take someone with him instead of running.
2) In a squads case one guy becoming a bit heroic may well cause his budies to assist, lots of cases of 1 man turning a fire fight fool hero or just desperate your call.
3) Why should units only recover at the end of the turn makes it less gamey that they do something as about to become strawberry jam. If you were running & about to be caught might you not decide to fire back & riders are hard to miss.
4) Its a 3 minute turn one shot from the crews pistol does not represent one bullet fired he has taken some shots & perhaps changed cover in that volley. Elated by his success he then tries again as they bail out & pays the price.
5) The riders are doing there best to stay on the damn thing on anything but a paved road do you really think they are firing at him
6) On that point the logical thing would be to stop & let them bail & kill him me thinks. They could also see if he had any freinds before remounting & bouncing along or more likely would carry on on foot.
Realise you are probably trying to overtake & cut off but you need to know exactly whats there to do so or risk a tank & infantry in a very exposed position as in riding to kill a few men. If thats what you are doing a safer option is to drive past them not adj & unload. Now fire at all targets to keep them running & let the squad kill them as they run into his arms. I say safer but an ATGM MMG anything really could ruin your day if you dont know its there.
7) As a thought & no idea here the routers may be more likely to recover because the tank has riders which are an easy kill.