we're not talking about the ethnic composition of these cities but simply what the cities themselves look
one of the top Evropean cities just by sheer amount of money poured into its improvement
it simply doesn't help because no matter how clean your streets can be, it won't change the fact than an average French person lives in a cozy, stylish terraced house or a 19th century tenement house with beautiful decorations, while an average Muscovite lives in a run down commieblock
to improve that you'd have to demolish 3/4 of Moscow and replace that with detached/terraced housing. But as far as I know, while they do sometimes demolish old commieblocks, they just replace 5-floor khrushchovkas with 25-floor putinkas which only makes things worse