Whitney > Beyonce.
I never liked Beyonce. I always felt like she tried way too hard to outshine the other members in music videos, live performances, etc. Overall she just tried hard instead of letting it come natural. It always seemed like Beyonce & Destiny's Child instead of Destiny's Child.
I think B's looks makes ppl want to take away from how talented she really is. Whitney had the more "grown, mature" sounding voice. To me, Whitney has the "classic" female singing voice which i could understand why ppl may say Beyonce may sound a little pitchy at times. But going off pure singing ability tell me what Whtney could do that Beyonce cant