This can't be the best way, can it? If it is, much less analytical groups that are comfortable being cohesive, complimentary, and encouraging will out-recruit us, out-perform us in charity, and cooperate more than us.

I think you have that backwards. I assume that by 'this' you mean the situation that obtained while Eliezer was fundraising. I assume that if 'this' is the best way, then a group employing 'this' will have better outcomes (by definition?), but you conclude the opposite.