The thing is if it was an undisputed classic there would be no need to try and justify why it is one lool...It's the op's opinion but I wont accept it as fact
Actually, you do need to qualify it. A lot of albums people call classics were called this AFTER the fact because calling things "classic" is a relatively new thing used to discern good music since rap is so competitive. Its all subjective at the end of the day, but since rap and thus rap fans are so competitive, they try to use any standard to say what the "best" music out is.
Drake is certainly talented and can absolutely rap. He didn't release a single last year and still MURDERED all his guest features to the point where he was at or near the top of several "best verses" lists.
Say what you want, but outside of Kanye and maybe Lil Wayne here and there, no one is taking as many risks with their music as Drake is.
Nas had a great album and so did many others but...you know its gonna take more than that to win sometimes.