>>The dominant sentiment slants more toward guilt and squirming about their own parenting<<

Very true.

>>They sure love to refer to everyone else in broad generalized strokes<<

Sadly, also true.

Oddly enough (in terms of timeing), today someone on my f-list linked to this article - "How to land your kid in therapy," about typical U.S. liberal child-rearing - which cites Tiger Mom in more measured terms than most of the original reviews: "Chua’s book resonated so powerfully because she isn’t so different from her critics ... When the Tiger Mom looked unsparingly at her parental contradictions, perhaps she made the rest of us squirm because we were forced to examine our own."

That's not to say there wasn't a lot of ugly conflation with prejudices and blanket assumptions about Asian cultures as well.