I wouldn’t call it underrated. It seems to be very popular and often has better ratings than other very popular games. Personally I think it’s not necessarily bad but slightly overrated. I would’ve liked to try the more detailed designs in a more complex, less fast paced/arcade-y version of the game.
It’s a nice game, probably one of the best RTS projects out there. It was probably even better 10 years ago. That about must’ve been it’s peak more or less. Maybe a bit more.