This is a false comparison, since the children would presumably be doing nothing at the daycare offensive to the Knights' religious beliefs.
Yes you're right. And I would care for a lesbian couple's children with no problem. But I would not hide my beliefs from the kids, so I doubt they would find ME acceptable. I'm not saying I would set out to insult the children's legal guardians, but when I care for children, I see it as my responsibility to teach them about right and wrong. I also read books and provide other Christian based material for them. I suppose it would be easier to avoid if they were the only children I cared for (still it would come up), but I certainly wouldn't sacrifice the proper training of other children for the sake of the immoral "moms." They wouldn't want me as a babysitter, but I wouldn't mind doing it.
Likewise I certainly wouldn't want them to babysit my child.