I am a bit confused about Inov-8 footwear activities web page. I was looking at this site http://www.inov-8.com/Products-Activ...PG1&L=26&AID=1 and did a comparison between X-Talon 212, Roclite 285 and Muclaw 270. All of them have sticky rubber outsole, performance last and a rated 2/5 cushioning. Although all are ideal for mountain running according to the site, only the roclite 285 is for limited use in mountain marathon. Also, while the roclite 285 is ideal for trail running, mudclaw 270 is for limited use and X-Talon is suitable. Can someone justify these differences since these shoes have almost the same specs and are ideal in one running category? (mountain running) Thanks.