Which Haven heroes do you prefer?

Of course, it doesn't exist:) There are no invincible players, after all.
And as for what I'll say about the "Lattniks," try playing with them yourself, paying closer attention, or go up against a hero with high defense and a large number of "Lattniks." Maybe you'll change your mind.
We can definitely argue – the main thing is that both sides provide arguments, and don't just yell at each other like idiots; then everything will be fine.

Alright! Let's try it. Here's an analogy: imagine Dark Elves versus Light Elves. The Light Elf has a disproportionately large number of Ents (150 versus 70 Shadow Lords of the Dark Elf) and very good defense (3 points higher than the Dark Elf's attack). I won't describe the whole battle, but the gist is this: the Ents fought well and defeated 3 units, but they attacked so rarely and moved so slowly that they couldn't save the battle; they were eventually defeated (mainly by ethereal Minotaur duplicates). I think the same will happen with "Lattniks," so I still don't think it's worth relying on such a low-initiative unit