A lot of people have a different opinion on what "style" actually is.
1) The cleanness, smoothness, speed, whether you make it look easy or not, if you struggle to keep the combo going etc.
For me, good examples for good style would be Rocco, Linder, Lindroth, Artes, Zegan, Kamalio, etc.
2) The other "kind" of style is what kind of freestyle you do, or what characterizes you. For example, "freestyleforlife" names Séan. This would mean he likes Séan's "show, performance-orientated" style? Or another example is what Andrew mentioned: That he does cross-ahtatw nt very high, or that he moves around a lot. This is more a thing of opinion, some people like Séan's style, which includes a little of dance, others like other kind of styles.
For me these are two different types of style, and some people always confuse this.