[Endoperez]

I think they are a bit better than that. They have Str 17 and glaives - even with their att of 10, they'll massacre any unshielded heavy infantry, and even against shielded infantry or cavalry they should fare quite well. They are also available in MA, where they'll just massacre e.g. Ulm.

They are tough for non-mindless undead, and have exceptional morale for non-mindless units. If there was an item comparable to Ivy Crown, they would be just plain better than Vine Ogres, and Vine Ogres are good. They also have the excellent mapmove 3 of most undead, and their high magic resistance makes them more resistant against most common undead counters.

They aren't exceptional unit, or even something you'll want to summon in every game, but they are good in few situations (underwater, against heavy armor) and a bit more useful in MA than in LA.