Personally I think the SAA stands a better chance in this standoff and might come out on top.
SAA would almost certainly be able to win out in a flat out 1v1v1 but their problem right now, in the real world is that their 150,000 men is pretty small when (and cause) they have around 80 different fronts in random parts of country to manage at the same time. But in sheer firepower, they'd win undoubtably.