Garmin vs. RunKeeper. Garmin wins!

I've only been running for about a year and a half, but I have a good idea of how fast I'm running by how I feel.  I've been using RunKeeper instead of my Garmin for no real reason.  I guess I liked someone talking to me while I run, haha, in the form of the robotic voice quarter-mile updates.  The problem is that the quarter miles aren't quarter miles.. they're more like one-third miles that I am allegedly running in 10 minutes or more.

RunKeeper has been telling me that I'm maintaining a 13-15 minute mile.  I knew that wasn't right; I know what that speed feels like.  15min/mi is my current slow, distance pace, and not my short (2-4 miles) pace.
It's discouraging to know that I'm doing one thing, but a dumb app is telling me I'm doing another.

So I wore my Garmin today for my scheduled 3 mile run.  First mile came in at 11:03; and my overall average was 12:02 min/mi.  I'm using my Garmin from now on.  I still use RunKeeper, but I enter the stats manually.  I'm keeping track of the 500 miles I want to run this year.  I'm a quarter of the way finished!