Specific UI preferences & user behaviours in Singapore

I am currently working on an SG site where I have changed the width of reading columns to keep to best practice for reading. I have now been told that customers are complaining of the white space thats now there (still waiting on the evidence).

This had me thinking about moving away from global best practices and try to find any specific UI preferences & user behaviours for Singapore customers.

So far I have yet to find anything beyond buying & device using statistics. A quick view at the most popular ecommerce sites shows examples of stronger colours and more information density. But I was wondering if there is any other sources out there that can give me greater insight.