Actually, you can watch and see the same people occ them, they usually use the same size force every time. It's go time when I see lonewolf or mechanist because I know it's just a sapper. You want to get it the first time of each day because it comes with 2 free thunderheads. Watch and learn your enemy's. Know when to send Fast Boomers, or when to Tap the breaks. Attacking a Lv.115 named gunny... Not a good idea.  but that lv.70 There is a completely different story...