I live in a 150-unit apartment building that houses about 300 people, on the edge of the neighborhood. I have no financial stake in the outcome either way, I just don't want to see something beautiful destroyed. I would much rather they put up another 150-unit building than tear down 75-100 houses to achieve the same outcome.
Usually it seems that people who are moderately opposed to two houses on a lot would be rioting in the streets over a 150-unit building. But I agree, it's a better way to achieve the same outcome.