That means that Order 1 -5% Events, Turmoil 1 +5 Events.

And Fortune, Misfortune affect +5% per scale.

So now if you take Order 3, Misfortune 3, you will even out to the standard.

While if you take Turmoil 3, Fortune 3, you will have 30% Increase in events, with 80% of the time them being good.

Whether or not this 'balances' out Order/Turmoil we'll have to see. I didn't see anything about changing the weight of the events, but I actually haven't seen a bad event with Order/Misfortune 3 yet with Black Forest, but that may be because of the fortune tellers.