Hell, The CW's DC shows have mostly been better than the DC movies in recent years. I'd say the Arrowverse is the closest thing DC has to the Marvel Cinematic Universe, much more so than the inconsistent, troubled feature film series. The MCU and the Arrowverse are the two screen franchises that most successfully capture the feel and storytelling style of large, interconnected comic book universes.
Although television is usually better than movies these days, because TV has more room to develop characters and ideas, and because TV is a writers' medium while movies are a directors' medium where writing is often undervalued, leading to weak or incoherent storytelling. The only real advantages movies have anymore are budget and production time -- though I've always felt that too high a budget works against quality because it's easy to let self-indulgence and spectacle take precedence over storytelling basics and filmmaking discipline.
Indeed, if anything, it seems that the DC movies have been trying to emulate the success of the Arrowverse. They're following the lead of The CW's Crisis on Infinite Earths by using the multiverse as a device for bringing back earlier cinematic casts (something Marvel/Sony also did with Spider-Man: No Way Home), and they even asked the Arrowverse producers to include Ezra Miller in CoIE as a teaser for the Flash movie.