While a handful of premium weapons overperform compared to their free counterparts (MP41, MG30, Polish BAR, Berlin SMGs), the fact that their squad sizes are as limited as they are makes them nowhere near P2W. Heck, if those specific weapons were brought in line with their free counterparts (higher recoil for MP41/MG30/BAR, longer reload for the Berlin SMGs), they easily could get a buff back to normal squad sizes and still not be P2W.