President Obama -- J.R. Smith Can't Outshoot Steph Curry

President Obama just took a stand on the NBA Finals ... saying there's no way J.R. Smith has a chance to outshoot Steph Curry ... despite the fact Smith has been ON FIRE in the playoffs.

Obama went to Twitter to answer some questions ... when someone wrote:

"Can JR Smith out shoot Steph Curry and lead the Cavs to a championship?"

Obama's response -- "jr smith having a great season but the heart of the Cavs is Lebron. And no one can outshoot Curry - maybe Korver if wide open."

So far, no response from Smith ... but we're guessing it's coming.