yes the first one because Sturms wins against every starting unit. .... but than after the FIRST engagement u faceing stronger units.
U could build green covers on enemy key points and upgrade stgs in isolate territory right outside enemy base when against SOV and USF.
If going against UKF, go guerrilla strategy because UKF have less units and AEC is poor against inf now.
edit
KW also have more starting MP than other faction, so they could bring troops faster than the enemy. This aggressive maneuver would get little drawbacks. Keeping pressure and also cap territories.