The crew with the better training. Now, that said, why is a single tank of ANY sort still functional?
For that matter, why is a single Toyota pickup still functional?
Yes. And related to what you wondered about why they are still functional, does ISIS have the mechanics and technicians to keep their vehicles functional if they're actually confronted with combat?
Armed Toyota pick up trucks can be very dangerous to Russian armor - I don’t know about this T-90 but I do recall Qaddafi’s armored invasion of Chad got wiped out by the use of Toyota’s with anti-tank guns mounted in the truck bed. In the 1980s if I recall?
Because the halfrican wants to keep em running.
There is no mystery for anyone anymore. The whiteyhut is occupied by muslims.