I don't know the exact amount, but the regular HA114's were pretty wet. However, the HA114B, which was created at the request of Marc Savoy, had Cajun standard tuning, AND it was quite dry as well.
That was my very first accordion, and I still use it as my "beater box".
I don't know why they do it like that. Maybe it is one of those "that's the way we have always done it" kind of things. When I bought mine, the very first thing I changed was to remove the cover, and covered the flappers with gold mylar tape.