Yes, a month or two to see if the game has legs or not. With good legs MHS has potential to end up selling 400-500k. Capcom were not expecting million sales, so how much do you think MHS needs to sell?
In my opinion if it manages to sell anything above 300k on retail it will be a good result.
This doesn't mean it will be a success. I was predicting at least 500k when it was announced. Not only me but everyone and his dog too.