Hello, it's funny to see you guys engaging into this. We definitely need more games with WotR and M&B style when it's exciting to control one guy and fight as our ancestors did in past times!
Now to the question, how "violent" will the game be, or specifically which age requirement are you sighting for? With that I mean will there be high amount of blood, severed limbs, spilled entrails, dented armor and cracked skulls?!
All honor to M&B but the exception of gore did pull away M&B's attractiveness to a grade in my opinion! I am somewhat irritated of that many devs nowadays tries to make their games too kind so their product can be bought from childs and adults. I know it makes the cash, but why make a game worser only because of making cash like as in a-la-EA style?
Medieval age was very violent and I want to add another thing, in manner of the "historical accurate debate" there should be gore in WotR!
Further I want to add this picture of a skull from an unlucky soldier, found in one of the massgraves from the battle of Towton (want to know more? check here) during war of the roses!
Note: Such grievously wounds were very common in medieval combat