That isn't any different from many people, especially those who have the "excess" wealth, but refuse to share it in the name of charity.
If you find similarities with this and Mengele, then Mengele is like a lot of us who don't care to donate, but keep the money to ourselves for our own satisfaction or higher cause (family, friends, etc.).
These same people are denying the poor people because of their own perceived importance and their own belief of distribution.
For example: http://dokmul.tumblr.com/post/14789300266/anakhunda-o-tabibaum-santaecclaus-wow
And I don't know which one of them are Christians or not.
I'm not saying that non-religious people who are greedy and selfish are any less bad, because they aren't. But saying Salvation Army is exempt from judgment just because they help a few people they deem worthy? That's disgustingly warped logic.
Anyone who has the means to help someone but chooses not to out of their own selfishness deserves to be judged. Religious or not.
The only reason others were not mentioned was because of the original topic of this post.