Or maybe it's just a typo on the website?:)

Well, here's another screenshot – the attack is lowered, and the army isn't even the right one for Nimues... it's hard to believe it's just a typo + if you look, I'm sure you can find something similar with the others – it's just a pain to check everything – I just pointed out that it's clearly wrong!
And I'm not even talking about other versions; in 3.0, I think one of the elves had 10!!! emerald dragons... I don't think that's ever happened!
Anyway, here's the link, take a look:
http://www.drachenwald.net/heroes5/duellhelden.php
It's all in German, but I think you can figure it out ;)