Quality... well, it have an impact in the game, try to fight with poor legionaries, they do worst than average... if dices want it but in melee is very very strange see poor HF or MF do an extreme good job but curious for poor slinger and bow units i see them do a better job than average and even superior (i never see superior creta bow units killing 73 soldiers in one shot but i see it one time per battle at least when i fight against or with armies with poor slingers/bow units) shoting to the same type of HF unit.
And for jabelin in close combat... well, in the game are 2 different combat types, shoot and melee, in shoot light infantry rules (well only them can shoot except some medium/heavy mounted units) but in melee many times they win against close combat troops (phalanx are protected and lights usually not except some roman units) using much better close combat weapons, equipment and of course training, i dont understand how a jabelin unit surprised in open field in close combat can do more casualties to a heavy unit... or they can launch their jabelins/rocks/arrows as they are shooting a modern weapon??? shotgun??? hehehe not understand me bad but in the game melee is melee and if i engage enemy light units with HF i expect dont suffer as i was in range combat
