TLC didn't have any Whitney Houston vocalists either SWV ,Xscape En Vogue all put together could sing circles around them they were good but let's be honest vocal wise they can't touch Brownstone,Kut Klose ,Jade,702 record sales aren't everything if it actually went on vocals alone they would be considered average sounding a lot of female groups that could sing better than them may not have reached their heights but it does not mean they couldn't sing.