Well one of the things is that written Chinese, I know stating the obvious here, is not a romanised language and needs to be learned from an early age if there is to be any form of real competency. Yes it is possible to learn 4,000 maybe 5,000 characters later on in life but it takes huge commitment and this is pretty much the basic required. The reality is that most do not bother.
Those from families with 2 European languages have an easier life, the romanised alphabet is pretty much standard across languages. In this case the argument for learning written later in life could be valid however learning romanised letters would not really hinder reading and only slight help with words would be required later.
And as we know from our French colleagues here, that their children learn French not so the Germans are able to identify the path of least resistance but because they are trying to instill some of their heritage and culture. The kids are both western and chinese so somehow we should be able to let them have the best of both as well. I'm sure as parents we will find out how to do that over the next few years.