Imo Catherine has much less dps with stormcrown compared to Ardan, which i did include in my ardan guide. Also, because with tank Cath the damage reflection is much less so the Kraken solo or dragons solo takes too much time. Also also because Cath can't really solo anyone with decent shield late game i usually exclude that option.

Dont forget blacfeather second skill and aftershock first skill. Bascially any hero could steal the kraken alone, all they have to do is to last hit

://// May I just point out how wrong you are. Let's see... Here are some to start: Krul(obviously), Reim, Alpha, Joule, Fortress, and Grumpjaw not to mention tanky roamers with SC and fed carries that do enough damage,