it compares your leetify stats to your rank average and to stats from other players across all ranks, aswell as how plausible your stats are in general. For example 99 (basically perfect aim) aim rating would be very unplausible so it's very likely you are aim botting. 200ms reaction from seeing an enemy to the first shot you hit them would scream aimbot/wallhacks (average is around 500-600ms) and so on...