He appeals mostly to white teenagers, so why not?
Nah... Drake's appeal is pretty broad man.

Cac teenagers, to Hood nikkas, to the young weirdos, the females, to the oldheads rock with Drake.
@OP
1 Star for OP mentioning "Eminem"....

Never under any circumstances should a black man mention Eminem in conversations about being the "greatest,best,etc" of anything in our culture.
Yall not about to allow these Cacs to Elvis Presley this nikka as the king of our shyt...
Now regarding the topic.
It's hard to compare his popularity to a Pac or Jay cause times have changed... Hiphop is now the pop music of today, plus we live in the age of social media.
Also I don't know what you mean by "surpass", but he's up there as far a "popularity" is concerned..... but popularity is the only category we can rank Drake next to Pac or Jay.
Pac & Jay didn't have Ghostwriters.

(Even though B.I.G. is slick Jay-z's Ghostwriter

)