4:20 PM PT -- Charlamagne Tha God has weighed in on the debate, and he's also giving the throne to Chris Brown ... but says he's gotta share it with someone.

We got Charlamagne Wednesday in NYC and he told us anyone calling themselves the King of R&B is spreading fake news, and he called out a long list of offenders. Sorry, guys.

Check out the clip for Charlamagne's pick for co-king ... plus his wild take on the Kardashian clan.

Jacquees jumped the gun when he declared himself the best R&B artist of his generation, because the crown still belongs to Chris Brown ... this according to Tank.

We asked the R&B veteran for his reaction to Jacquees' bold statement, and Tank tells us no one even comes close to CB in terms of talent and hardware. Sorry, Jacquees, ya still got some work to do in the eyes of your peers.

But, don't get it twisted, Tank isn't hating on the young singer for hyping himself ... he thinks Jacquees can handle the pressure that comes with this kind of controversial statement.

We also talked to him about fans cutting R. Kelly out of the convo. Tank admits the sexual abuse allegations make it tough for Kelly but, personally, he's not ready to dismiss him -- at least, musically.