When I analyse just the after-game-ratings and info I can see, I'm not upset with the loss. I think it's perfectly normal.
We might have had the better team, but there are some factors in their favor, and they have proven to be enough for the win, and it's not undeserved, nuless you want to argue they where lucky we made the mistakes, and that doesn't count for a deserved victory.

here are the factors:
* They have HCA
* They play with higher motivation for the game (S.A. put more effort ni the game then Belgium), which in combination with HCA is extremely dangerous.
* They pick a good defense, and not a bad offense.
* We pick a bad offense, we attack inside, where their defense is strongest.
both last points derived from this statement: defenses and offenses are best neutral, unless you clearly have an advantage in choosing inside or outside. Translated this means: unless opponent's defense is clearly lower in 1 area, neutral attack is best.
Executed on this game, we see: we attack inside, not is it no good tactic, but it's bad, as inside defense is strongest for SA defense. Our defense is good, it's balanced, BUT they choose to attack inside, which means we should have had a better defense if we would go 2-3 zone.
It is clear that our guards get the best ratings in this game. I think with neutral or outside offense we would have had a very big change on victory. Even though playing away, and putting less effort in the game is very dangerous at all times, unless you realy overrun your opponent on neutral court with normal tactics.
I'm not going to argue about playerwages and comparing those to figure out who's got the best players either, nor will I agree on estimating the value on the field a player adds, by looking at his wage.

With all these points in favor of S.A. I think they had the best chances to win the game, right from the start. They are just not strong enough to win by a big margin, but it certainly isn't an upsetting win.
They are not your friends; they dispise you. I am the only one you can count on. Trust me.