Barbie is, to me, a extremely blonde bimbo. She's pretty much a stereotypical white woman who cares about nothing but vanity and material gain. I think her 'racism' resonates with more children than golliwog ever could hope for.
Not sure if I'm misreading but I don't think the use or depiction of Barbie can be interpreted as racist, it's more to do with gender norms in Western society though and what people expect of boys and girls as they grow up and the attempt to instil that normality into them. Apologies if I've misread your post though.