india was a one party state too for the first 30 years, but that party had all the policies wrong. its about the policies of the government, not about it doing things.
I guess Japan, South Korea, Singapore, Taiwan and Hong Kong plus now China all just got lucky then.
India's case just prove that even under democracy, the government could get policy wrong. If both type governments get their policy right, then who do you think can implement those policies more efficiently and more swiftly.