I've seen nords raped by cav often though. In the end, it doesn't really matter, there were many occassions on native where teams were just so unbalanced that I couldn't do much as an individual, just like in crpg.
On an individual level, you can just play crpg in the same way, trying to maximize the damage you deal to the enemy. The main difference is that some level 10 guy blocking everything and feinting can be a lot less dangerous than a level 30 who has removed his right mouse button and the big battle is largely butchering work. Otoh this level 30 guy has to watch out when a good level 26 comes his way, so you can just try to protect yourself and allies with the little resources you have and hope that the others do their job, which can be fun, too. Like charging a shieldwall with a broken shield and a knife in the hope that they get greedy and split into two.
I'd also sometimes think the native police of making everything available to everyone is not always the best.
Everyone can pick cavalry or archer at start (which is good in a way since you can play how you like), but it can also mean that I'm the only infantryman, arriving at the battle just as cav and arhcers have decided it.
It's all just a tradeoff and some like this better or that.
I think taleworlds should have just put more emphasis on marketing the multiplayer part as "medieval cs" or something, in the demo you can only see SP, which is more or less a standard leveling RPG with better combat system and no magic, might have turned off people who would have been interested in a pure fighting game.
Or not, I don't know.