Sorry guys I had to jump ship.   I know you can expect the same payouts over time either way, but there is another factor involved.  The odds keep increasing against us every 14 days.  If the difficulty remained constant then yes I would agree you get the same pay over time eventually.  But the fact is when the odds change every 14 days, you do not have infinity to make up for the variance.  You have 14 days and if you have horrible luck, well you have to make it up now with even harder odds.
I think the logic that you eventually get same pay only holds water if diff remains constant.  Matter of fact if pool speed remains same or drops, you can expect less and is highly unlikely you will ever regain what you lost during the bad time.
I really like this pool, not sure what is keeping another couple petahash from joining us.  If we could hit about 3PH I think we would be able to hold our own, but for now I just can not afford the gamble.