I haven’t read all the replies here yet, but I read The Last Jedi novel.
The novel seemed to indicate that Rey was tapped into the Cosmic Force while Luke uses the Living Force.
I think (according to the novelization anyway), that we are dealing with a different aspect of The Force and thus, different abilities and strengths(?!?).
I’m not saying I agree, I’m just saying, for the moment, that’s the closest to an explanation I’ve seen.