It is as much about efficient running and injury free running as many other disciplines. It gets you off your heels and into a higher cadence landing under your cog and lifting your heels - all very good.
It does come packaged with a lot of Amercana but the alternatives are POSE, Evolution and Stride machanics, all americana too.
each discipline has its own way of teaching and the Chi way seems to suit many. Imagine Americana wrapped not with eastern mysticism but western "science" and you have got POSE and Evolution.
Have a look at them all, make a decision not on which is best as they are all as good as each other and all of them do as they say they will on the tin. choose which is best for you depending on your personality, your stickability and your goals for running.