Um no? at least not "full ot it", i googled it real quick and it seems its only a few caves and the art is obviously much less developed as opposed to Homo sapiens who produced figurines, jewelry and more complex art.
Also they could throw spears, what they lacked the "wear" associated with constant throwing, not the bone structure.
Even if they were indeed as smart as humans, they lacked the ability to properly express it into art or abstract thought, a theory claims that modern humans developed mental visualization in order to calculate the throwing distance. Which is another reason why the claim that northern europeans faced greater challenges is flawed, the game of Africa is wild as fuck since it evolved along with early modern humans as an apex predator, while game elsewhere didnt
https://www.ucdavis.edu/news/neanderthals-lack-drawing-ability-may-relate-hunting-techniques/