Video games also have potential legal advantages over IQ tests for companies. You could argue that "we only hire people good at video games to get people who fit our corporate culture of liking video games" but that argument doesn't work as well for IQ tests.
yet again an original post title that self-sneers
The fact that this "bigger problem" is rote memorization aside, it looks like there are a whopping 1700 units in that game. With names like M113A3 Super Dragon, CH46-C Phrog, or LVTP-7A1. Imagine some horrible dystopian future where you get to lock yourself up in your room for a couple months with an Anki deck trying to memorize as many Wargame: Red Dragon units as possible.
Your brain would probably be fried by the time you edge out the competition for your completely-non-Red-Dragon-related job.