The performance tester just display an average time for now. It should also display:

• Median
• 95th percentile
• Max

But also

• All this for mobile, desktop, bots.
• All this excluding GCs and also a stat on GCs with http://docs.oracle.com/javase/7/docs/jre/api/management/extension/com/sun/management/GarbageCollectionNotificationInfo.html