DeeKay of SoulCulture commented that "even with the straightforward, hugely predictable electro-pop on the Swedish House Mafia-produced 'Numb' and 'Euphoria', Usher is operating at a level above his David Guetta and RedOne-loving peers."[REF]
Upon the release of Looking 4 Myself, due to digital downloads, "Numb" entered the singles chart in South Korea.