and if Kendrick plays his cards right he will have a long era.
Will hit platinum before Drake, will have more hits than More Life if he does more features and releases more singles with MV. Also if Drake decides to be real lazy or moves on to a new era which is likely (though Blem is getting airplay so he may push for that). Kendrick will also shit with accolades during award season and have longevity - again if he pushes for it. Drake can always make a comeback, as the year ain't up yet.
The problem is some Rappers can release albums, sell good for one week and that'll be enough for them to drop off the face of the earth because the standards are low for them and they can pretty much get away with first week buzz from their fans.