I believe as they say, 10 apprentices does not equal 1 master. When you work with any outsourcing company they have people of all skill working on the project. You will get their best masters at first, but at some point the "b" team will be brought in and you will start seeing bad code.

I think this must be somewhat the nature of hiring contract workers because I have seen it again and again coming from all counties, as well as within the US.