OK ;-)
The thing is: At the dimension we are talking about (enthusiasm about 9-12), a plus of 33% would lead more or less to the same value like a numer of about 2-2,5.
So let´s have a look at other values:
For example: Since a few games, i played with an enthusiasm of 11. After the game i get always 13, one day later 12, two days later 11, three days later still 11. This is my data since a little more than 2 weeks. I expect soon an increse to 14, the fist time.
If the increase would be about 33%, i should already have had an increas to 14 a time ago. But so far i just don´t get ;-(
This is the example i can give, which makes me think that the increase is always about plus ~2.
And i have this one:
Last season i had an enthusiasm of 5. I played one game CT, enthusiasm went down to 3 (a low 3, because 2 days later it was still 3). Next game, i played TIE, and it went up to 5. In this example both of our suggestions work, like an example from the begin of this season, when enthusiasm went up from 5 to 7 after one game TIE.
Maybe we should collect a few data. It shouldn´t be to many necessary to figure out the truth behind.