Usher vs tinie tempah?

ahh i know that usher is more well known than tinie tempah, but tinie tempah hasnt even been famous for one year since his pass out song. anyways he has already won lots of awards and beat usher for a brit i think..... i know usher is more global but i think when tinie has spent that much time in the limelight he can be just abig, what do you think? who do you like more?? xx