Without knowing exactly what their maintenance entails VS the "other games" it's impossible to say.
Maintenance for one system I manage at work is just rebooting the servers and clearing caches and giving the racks a once over to make sure there's nothing obviously wrong. For another it's checking every single jumper one by one and passing test lights through them to make sure there is no degradation. The difference between the two is one takes 10 minutes the other takes 3 hours and if the first one fails it's usually easily fixable but if the other one fails someone could die (quite literally). So it's highly dependent on how thorough they're being, how complex the systems are, what their standards are for "passing" and what they're actually calling "maintenance".