John Wick is a freaking masterpiece in exactly what it sets out to do. What that is is to tell a slick, high octane, pacey and resonant action film where you can actually get an impression of what the fight scenes are doing and how to follow them (trust me that was an issue with action cinema in 2014). It gets in there, hits you at an emotional core, gets you ramped up with carefully thought out and well managed action sequences and culminates with one of the most beloved films of our modern age.
The sequels are. Fine.