Just my opinion:
TSATF is Great , fun to play, visually appealable..its the only wargame rules that allow to simulate on tabletop the real essence of colonial warfare...that is a regular , more or less eroic army , vs tribesmen/natives with real antropological advantages and disatvantages at war and that fight like African forest tribesmen, Sudanese tribesmen ecc and not simply as irregulars ...for example despatching wounded, charging without orders and the fact that, on most cases, warriors becoming a herd of sheeps if left without leaders..that use fire weapons roughly and not able to send to contact or in front line every member of the unit (tribe)..with that in mind you can scale down realistically your forces..I think those features which are described in colonial warfare manuals like “small wars” by Calwell ecc...could be find only in TSATF..the other great feature is that if you like personalized skirmishes or bigger battles you can play both with TSATF