Funny you mention that, 'cause that's not even the case! tl;dr of the link, that's just ONE accounting of a crooked US war simulation where a lower tech-level OPFOR should've kicked the shit out of Amerikan forces only for the simulation runners to either forbid movements of OPFOR against Amerikan movements, or just unkill or undestroy targets that OPFOR took all of about ten minutes to TPK.

This has happened BEFORE MC'02 and AFTER it. Basically, there's a reason Amerika's gotten its ass repeatedly kicked by rice farmers, shepherds, and poppy pickers.

The red team was ready to begin shooting down the V-22s when Van Riper’s chief of staff received a message from the white cell. Hostile fire against the V-22s or blue’s C-130 troop transport planes was forbidden. The white cell also directed the chief of staff that the red team had to position its air defense assets out in the open so the blue forces could easily destroy them. Even after some were not destroyed, the red team was forbidden to fire upon blue forces as they conducted a live airborne drop. Van Riper asked the white cell if his forces could at least deploy the chemical weapons that he possessed, but he was again denied.

Van Riper was furious. Not only had the white cell’s instructions compromised the integrity of the entire process, but also his own chief of staff — a retired Army colonel — was receiving conflicting orders about how his force should be deployed. When Van Riper went to Kernan to complain, he was told: “You are playing out of character. The OPFOR would never have done what you did.” Van Riper subsequently gathered the red team and told them to follow the chief of staff’s orders. The independence that he believed a red team must be granted to do its job had been corrupted.