Which has nothing to do with Ambiorix's nellies/human relative speeds which is what RJC was commenting on.
IMO it has everything to do with it as the speed of both units are the same, classification as tribal is the same and the answer that is needed is not, sorry : oh this is not historical but OH did we play the rules correctly !
Sorry but it is not me who missed the point ! The question was about RULES not historicity
( still friendly do not worry )
The point that is important is that "fleet of foot" must be taken into account if you want to beak off an opponent that has fleet of foot
So a swiss keil could break of from a landsknecht UG based on F4 as it is same speed
But a landsknecht UG ( for exemple ) facing a swiss keil cannot break off as it is considered slower