I think the problem is, what is the definition of beneficial when it comes to luck.
This is how I read what he said
Your territory:
%chance of random events is 15% for all (which means, by design +/- random events is not good or bad and therefore it doesn't matter who's dominion is the source)
Scales - enemy LK 3
Result - -39% good event, LK 3 type events (good or bad)
Scales - enemy MF 3
Result - -39% good event, MF 3 type events
Scales - Your MF 3
Result - -39% good event, MF 3 type events
Scales - Your LK 3
Result - +39% good event, LK 3 type events
Which seems to make sense. Your LK3 dominion spreading makes goofy things happen where ever it lands. Just in you lands it makes neat stuff happen, in their lands...random goofy stuff happens too. BUT, it's likely to be bad...just not horrible.
And on a side note: I could care less if my units being cursed in a territory was a random event or not. I'm blaming it on someone.
"PANGAEA, I'm coming for you!"
