Well, although there are more Christians among the MPs, or for
that matter, even if the majority of the MPs come from a religious
group, and their views may be influenced by their religious
background, I think, if the majority of Singapore's multi religious
society view the policies as morally acceptable, I dont think it
matter that much.
But then again, this was never a big problem. The problem, as seen
from the current affairs and discussions in SC, is whether the
people's views are heard at all or not. 
Besides, lets not forget, despite the protests even from the
religous groups and some ministers, projects such as the IR one
went ahead. Oh well