Come on, it was just a polite way of turning down Papy Mboma's invitation to do a bit of polemic. The guy said he was there to talk about himself not others but Papy Mboma kept pushing him that's why he gave that sarcastic response,even Fally would have done the same. Ferre and Fally know each others songs perfectly,we all know that for sure.
How was it polemic if he answered it? If they asked him to sing a Koffi or Jb song hell give the same response?? His response wasn't sarcastic it was just straight stupid and it made him look bad. Fally would've found a way to get around it. Fally's people mention Ferre by name in a good way (sometimes) but Ferre's people always make fun of Fally.
maybe it also surprised some people because it seemed like their rivalry was put aside for a long while in favour of the "one" with werra, and also a sudden,strong "rivalry attitudes" re appear