this whole thing is bizarre,fally being "bigger over the last 15 years" assuming its really like that,can be logical explained by the age factor,one entered and lived his prime in those years,the other was past his prime but had still been going kinda strong
its not rocket science,janet jackson is not like beyonce today,madonna not like cardi b...if mj was still there he'd not be even the mj of you rock my world which was already in decline
and now i am seeing that its creating polemic on internet,fally's fans calling koffi "vieux rando" and some people claiming to be koffi fans too attacking fally
this is why i hate comparisons of careers between artists each of them has his story depending of time and some other factors