One of the primary marketing points for the standard fit is the wide toe box that allows the toes to spread out. This certainly proves advantageous when trail running as it prevents the ankle from twisting uncomfortably on uneven ground. I used these on forest tracks and they made for a comfortable run. However if you are looking for more support around the arch, this shoe is probably not your best option.
The sticky rubber role also gives it fantastic grip and surprising bounce. This creates good stability, particularly going downhill. The mesh upper also makes the shoe breathable keeping feet cool and not soaked with sweat after a long running session. The support on the heal makes them suitable for short distances over concrete which are often unavoidable on trail runs.