Running 100,000 `SELECT 1` queries: PostgreSQL (localhost): 2.71 seconds SQLite (in-memory): 0.07 seconds SQLite (tempfile): 0.07 seconds
I hope you understand that your claim boils down to stating that SQLite is faster at doing nothing at all, which is a silly case to make.
Running 100,000 `SELECT 1` queries: PostgreSQL (localhost): 2.84 seconds PostgreSQL (Unix socket): 1.93 seconds SQLite (in-memory): 0.07 seconds SQLite (tempfile): 0.06 seconds