In my experience, the java code is more concise to read and easier to deal with. At work the android client is less 'visually ambitious' than our iphone client, but tends to actually have less bugs and faster development times. Android has put some thought into multi-sized layouts and had the right idea how to do ui layout files from the start with their xml layout files. Android accepts the reality that multiple versions exist and allow you to backport new libraries into old versions. iOS not so much and we feel the pain in our development times and bugs.

Apple did their GUI foundation right with CoreAnimation, touch recognition and choosing c++ & objective-c as the foundation of their mobile OS. Android didn't do it right with java, a garbage collected language and their UI rendering fundamentals, and everything suffers the consequences of that today.