The season of galas is upon us: New York City Ballet’s was held last week, American Ballet Theatre’s took place last night. As with most things, the two companies have contrasting approaches. NYCB tends to build its galas around a new ballet – this season, it was a pas de deux for Tiler Peck and Robert Fairchild by Christopher Wheeldon. ABT uses the occasion to roll out a series of out-takes from the season. NYCB presents a handful of top dancers; ABT tries to cram in as many as possible. At the Koch last week there were no speeches (a very good thing). At the Metropolitan Opera House, the company brass intoned the usual lines about being “America’s National ballet company” – what does that even mean? – and a dutiful Sigourney Weaver read a prepared speech full of facts and figures about the company-affiliated school.