MS SQL Server definitely has some important features that are missing from PG. Top on that list IMO is real stored procedures that can return multiple heterogeneous result-sets with simple select statements. Another big one is client side tools. Query optimization and schema flexibility (being able to alter things instead of dropping in re-creating) might still be not as good in PG as well.

You won’t get a ton of agreement from this crowd though, despite the majority of them probably never having used it.