Have you used the debugger (emulator or physical device)? How about the integration of DDMS into eclipse? FindBugs? HotSwaping? One IDE for python, php, java ... etc? Code profiling? The list is basically endless.
It is second nature to me, but its confusing how someone coming from xcode could rail against eclipse. Sure, I like using vim sometimes, but compare adding a plugin to eclipse to adding a plugin to vim. Compare the debug capabilities of eclipse to nearly every other debugger I've ever worked with. You can do instruction step by step debugging on a physical device! It integrates with your scm and you project management.
I really think Eclipse gets a bad rap from people who haven't used it since 2004 and base their entire analysis on what their experience was then. But to come to a modern version of Eclipse and compare it to XCode and find eclipse lacking ... i find that suspicious.
Edit: Full disclosure ... Java coder for 6 years, android for 1.5 but have used Xcode enough :)