But let's say your target also builds two attack buildings to T4L3, notice how your plunder actually increases instead of dropping.
If you're changing a t3 lv3 for one SOS your ap must raise. If you're changing a t1 lv4 to SOS your ap will drop. T3 lv3 ap < SOS or t4 T1 lv4 ap > SOS or t4