all factions are absolutely easy able to play in "mobile flanking army" mode, even Ostheer.
You clearly never played OST in higher level if you consider them as an easy mobile flanking army mode, even Ostheer. They are always on the backfoot, always having to react to their opponent. Considering your stats, you cannot argue that you have any good experience with Axis anyway. I highly recommend to play more OST if you really want to enjoy a defensive type army that is based on reaction than action.
USSR is NOT aimed to be a defensive army, it doesn't matter how badly worded you put it across. Take it as a strong recommendation, go play with other factions instead of labouring random blabber on how bad USSR doesn't fit your playstyle.