Often, it is really impossible to say whether two profiles or characters are actually the same scammer.
A lot of the time, we identify African scammers by their language. Certain words, expressions, and idiosyncrasies are really related to how their language translates to English, or to what is taught in their country.
Words like cos and mum are very common among African scammers, and you will literally find hundreds of scammers who use those terms. In addition, some scammers will share scripts with each other, or even steal or copy them from one another. Scammers often create dating site profiles with information copied from other scam profiles or even real profiles, complicating things even further.
Most of the time, the only thing we absolutely know for certain is that both are African scammers.