[Mandea]

KB is miles ahead. I actually enjoy h6, the maps are big and from an artistic point of view, gorgeous. It has some tehnical problems but are solvable (in future patches probably).
The music is very nice.

You don't have to be online to play the game, you only have to launch the game with "/offline" parameter after heroes6.exe. Of course, no traits and dynasty weapons.

There are no scenarios H5 like, only campaign and skirmish maps. I love scenarios, I just hope they will add some later on.

I won't give in too many details as I don't want to ruin your experience, but the game is not bat at all. But the player isn't presented as much options as KB does and this is a pity.

Sadly I am yet to see the things they made much fuss about some time ago, in particular some unique bosses (I have ony seen one and it wasn't a real boss), battles with arenas and objectives etc. But it isn't a revolution like KB still is. It's a nice game which will get better with DLCs and add-ons but that's about all. It doesn't reinvent neither the turn based games genre nor the HOMM series (well, it never said it would but I would have liked to see this happen).