The problem is that everyone started out normally, like in WB. However, then people got one or two lucky shots with the pistol or rifle, and got hooked. Because of this fact, tons of people start out as Musketeer with the thought that they are going to be running around popping Cavalry off their horses and sniping Infantry from long range.
And this almost never happens, and usually they get easily cut down by Cavalry or Infantry.
The only problem I have with Infantry is their power. I cannot tell you how many times, as Cavalry, I'll be charging towards some enemies, only to have an Infantry unit jump up, swing his massive two handed axe, and kill both me and my horse with one hit.
Even using a top tier War Horse, and the strongest armor, even STANDING STILL, I will get one hitted. The top tier two handed Infantry weapons are absolutely slaughtering weapons. I'd love if they did less damage, and also if pistols did MORE damage. At close range, if an enemy in low armor is rushing me, I'll pull out the pistol, take aim, and shoot them in the chest. They will then hit me twice and kill me.