Please. Santos is one of the biggest and most successful clubs in Brasil, have never been relegated, arguably carry our strongest academy, etc. The Santos side that won Libertadores featured Danilo, Alex Sandro, Felipe Anderson, and Ganso. Neymar was a phenom no doubt but it's ridiculous and false to suggest he carried the club to successes they were experiencing long before he established himself(2 Libertadores finals from 04-11). On the other hand, though his tournament form was scary, Santos never finished in the top 6 of Serie A while he was there while Gabigol has already broken his Paulista record.
Neymar went pro at 17, a year younger than Dembele is now, but despite being professional for only 4 months the latter has already lead Rennes to the top of the table, into European qualification for the first time in 5 years, and one place outside of UCL qualification for the first time in the clubs history.
It's ok to acknowledge that there's special players/prospects out there that don't play for Barcelona.