Creating images with Android Asset Studio using iPhone images

I have the iPhone / iPad images from an application already created. Now I would like to create the images for the Android using the tool Android Asset Studio http://ift.tt/1o13CfF What should be the best approach ? create the Android images using the images from iPhone 6 Plus (@3x) ?? or using the images from the iPhone 6 and iPhone 5 (@2x) ?? or from iPad 2 and iPad mini (@1x) ?