Why on Android drawcall increased than on Web build?

[perfecto]

same game builds for Android and Web, there is a ScrollList view screen, CC 2.4.11.
What is the best practice to save or keep same amount on DC on every platforms?

1. Android (5.1) - 32 DC
   

   

2. Web - 10 DC
   

   

[pandamicro]

Because DynamicAtlas is disabled on native platforms by default