Matador I believe is a throw away weapon why, first, it is mainly made of plastics, which are not very durable for a reusable firing device as compared to the carl G all metal ( which by the way is heavy enough, personal experiance ). But the most important point is that in modern combat for Infantry vs tank ( unless u have the range advantage aka milan), u only got 1 shot then you have to get the hell out of dodge pronto because u have no time to reload before answering fire/arty will saturate ur area.
The Carl gustav was deemed too heavy for high mobility jungle warfare and asean phiysce ( i fully concur ) 1 man with weapon, 2 man with ammo with 1 disignated loader, take note that they all have to also carry their personal weapon and ammo , plus rations, water, signal set, webbing, bino's and that heat sink which other people call a helmet.
PS: I'm currently serving in a SAR reservist unit ( after serving 3 years as active). Matodor only given to those active ( fulltime ) units, we the cannon fodder are still using armbrusts.