Lol. I wouldn't go that far nobody touches beys performance skills. But I guess the comparison is cuz she came from a girl group and she is the one that got massive success, unlike the others.
If you see in this page in one of my comments above I posted her debut single fight for this love.

not primark

And i dont understand the hate on cheryl's voice either... I havent heard her sing live in a long time, but she did win a talent competition so she's bound to have some vocal skills