Looper is a good film, possibly a great film but definitely over praised. It's nowhere near as smart as I thought it was going to be or perhaps should've been. Wherever The Matrix comparisons came from (they are mentioned in nearly all the reviews but never attributed), there is no real basis for them. There are more obvious comparisons to other time travel films such as The Terminators, 12 Monkeys, Donnie Darko or even sci-fi-noir such as Blade Runner. My initial disappointment will probably have faded by a second viewing with lower expectations.
I also started thinking about the general state of films. If a good film like this is getting five star reviews then it only highlight how poor the three and four star films are at the moment.