Drake and Kendrick are totally different artists...
I know Drake is known for doing tons of features and will often take abit of the artists style and hop on a current trend but in doing so he does technically boost their careers...
Like he came over here to London and collab'd with a few artists and started dressing and talking like he was from Brixton for while, which no doubt made a difference to guys like Skepta who he worked with...
Is that putting on??? Kind of...
Thing is Drake is a popstar with fanatical fans like The Barbz and The Beehive, so his co-sign really can boost an artists profile... Whereas Kendrick isnt really a popstar, his features and co-signs prolly wont move an already established or partially established artists career that much...