Part of the problem has to be the culture of the operators. VIH Logging in Canada now has the high time Russian built helicopters, and after a few years of teething problems, now appears to have a nearly trouble free-operation.
But it took a lot of learning on the part of both sides.
From a design point, Russian machines are much more robustly built, and are Russian solutions to Russian problems. The lack of hangars, for example, drives many often overlooked things. The disposable payload fraction is less than on western machines and the fuel consumption is higher.
On a comparison to Western machines - it's interesting to see the KA-32 in the hangar (with little maintenance being needed) alongside another well-used Western helicopter that is stripped to the bones and undergoing structural repair as it does every year. The Ka-32 was originally lifed at 6,000 hours (I believe) and is now passing 13,000 with no airframe fatigue issues.
So, in the right hands, the Russian machines are just fine.