It doesn't have function. It will not give the different because you will be paid equally with the total amounts of dollars that already promised by the developers. The developers will be distributing equally with how much dollars that got by all of campaign members. That's why there are some members prefer to be paid in amounts of token instead of use the dollar as a way to determined total allocation as it will be more profitable when the price will be mooning.
I mean this way, when one project is paid with tokens then we have two possibilities?
First, if the coin is expensive, the selling price of the coins we have will increase, so our income will increase.
Second, we can immediately sell the coins at the price at the time of distribution, so we already know how much we earn.
Meanwhile, if paid in USDT even though the distribution is based on rules and evenly, then our income will never increase or decrease, because it is already based on USDT prices, so I prefer the distribution given in the form of coins.