No insult intended (seriously) but you were pretty much the only one who thought that.
IIRC there was a joke in the first Michael Bay's Transforms movie along those lines.
I think part of the reason is that it sounds kind of like Japanese and Finnish and Japanese are kind of in the same language group. Not saying there are kissing cousins like the romance languages, but as languages go they seem to be orphans which share a common great grandparent.
Sorry, but Finnish is part of the Uralic group and Finnic subdivision while Japanese is part of the Altaic language family and Japonic subdivision.