I think Irv Gotti produced it, but when Irv Gotti produces things I think it means "taking another song... and using it." Remember, he produced Ashanti's "Foolish," Jennifer Lopez' "Ain't It Funny (Remix)," and Ja Rule's "So Much Pain," which were nothing more than the instrumentals for Biggie, Craig Mack, and 2Pac songs without ANYTHING new. If anything, he tries to reinterpret the beat as close as he can, which can explain why "What's Luv" sounds so similar.