Base statement for backhand

When viewing video i paid attention to one feature: The righthands player makes backhand counterhit or backhand topspin in a right-hand statement when left leg is forward . Does that give any advantage or is it a technical mistake? 

Hi Serge,

This stance allows you to play a forehand more easily from the same position.  You may also find that they are straight to where they are actually playing the ball if they are playing cross court