Currently Uzbekistan and Bangladesh have almost equal GDP per capita, both nominal and PPP in US$, but Uzbekistan cities and countryside look not different to poorer East European EU countries like Bulgaria or Romania. They also have relatively advanced railway and road systems, which is ahead of USA, Canada and all American countries. Everywhere are clean and civilized. People are relatively well educated, although it is a Muslim-dominated society. Even their so-called slums are relatively clean and organized (a littile bit like Seoul slums)
Not to mention Kyrgyzstan and Tajikistan, which are not far behind in social development, although they are as poor as the poorest African countries by GDP per capita in US$.
But Bangladesh and India look world apart from Uzbekistan, despite having similar GDP per capita.