Mozilla and MOZ provide pretty different products. If your in a different category, it's often not "reasonable".
It's the same with Mojang's "Scrolls" vs Bethesda's "Elder Scrolls". It's silly, but because they're both in the video game category, it was a problem. If someone sold a product named "Scrolls" that was a gummy candy that looked like a scroll, it would probably be fine.
The law is unfortunate either way.