No reason to expect that's the current state of the AI campaign warfare when it's working properly. This is just a vid from a simple mod someone made to create a singleplayer fight with minimal features. Formations are a pretty in Warband and they've talked a lot about them in their dev blogs. Dev Blog 25/10/18 - TaleWorlds EntertainmentNPCs forming a blob like that is a bit special.
Knowing the M&B engine, there is no way you could be in that blob and swing a weapon, you'd just hit one of the guys around you before your strike is even halfway ..
Doesn't inspire confidence.
Of course, if the AI and player just send an all out charge command, you'll get two blobs that attack each other blindly. If the formation / tactic AI is so shitty this is common, then they've totally failed.
In different warband mods there would be differently levels of complexity for formation AI, and a lot of times the more complex it was the easier it was to exploit, such that the toughest opponents in the game literally just clumped and charged you, and easier opponents would set up these dumb formations that you could juke and pick off with cavalry charges and archers. It's not trivial to create a game that allows free player movement on horseback where the field tactics don't break down.
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