Wager alone maybe not enough to calculate how much bonus you may get especially at Stake because there are other factors such as overall profit and overall profit, house edge of the game, etc. If you are a gambler who can wager a lot of money, maybe duelbits will give you the highest bonus because the weekly/monthly bonus is calculated based on how much you wager as well as the house edge of the game. Your overall profit and account level will not affect the bonus.