All the Nod tanks are a lot stronger than in Renegade while in RenX GDI can't even put the turret on the Medium Tank correctly and the tank is even slower than in Renegade. The Light Tank has no trouble hitting Medium Tanks because they're so slow and because the Med's turret is mounted on the middle it has a lot of advantages in long range combat or close range when you can hide behind terrain. The Nod Artillery also has shoots faster than in Renegade and unlike the Renegade version doesn't have the "bullet spray" to it.