[scorpio_rocks]

Look at the weapon class in mobhack (from Mobhack help):

Class 13 = ATGM
Class 20 =Top Attack ATGM - generates many more top attack hits due to its flyover trajectory. It also is considered a class 21 missile for anti ERA purposes.
Class 21 = Multi Charge ATGM - Modern missile with 2 or more sub charges designed to strip away ERA, or a 'dibber' or similar device. Performs better against ERA protected units than class 13.