It's not useful to compare raw numbers against India and China since their population is larger than ours. Also, what % of total college students drop out? It's got to be near 50 (though maybe less for declared majors).
Has there been any academic research on the average quality of technical graduates in the USA versus India and China? I don't mean just memorization of facts and formulas, but ability to creatively solve real-world problems. Perhaps that's impossible to objectively measure.