hmm it doesn't really sound like Jay-Z to me but its labeled like that

Fake. The Jay-Z verse is from an old song, Girl's Best Friend.
I doubt that's Derulo too, I know he uses autotune but this is just

I call fake also.
And if that's Derulo, then he did a terrible job at this.. and he's one of my faves.

Sounds ripped from an old song or not Jay Z at all. But I kind of like it...