HOUSTON — There are plenty of reasons why, when presented with the choice of facing the Mets or the St. Louis Cardinals, the Phillies would choose the Cardinals. The Mets were just swept in three games in Atlanta, but have won 14 of 19 games played against the Phillies this season. The Phillies have faced the Cardinals fewer times — only seven games this season — but have gone 4-3 over that span. The Cardinals have two NL MVP candidate on their roster, in Nolan Arenado and Paul Goldschmidt, but both are righties. As a whole, the Cardinals have struggled more against right-handed pitching than …