Intents-events-metrics counts do not match even when there are no failed/stuck intents in ONOS

Submitted, Installed and Withdrawn counts should have been same since
there are no failed/stuck intents in the system at this point of time.
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onos> summary
node=10.128.40.41, version=1.1.0.admin~2015/01/05@17:09
nodes=5, devices=25, links=114, hosts=54, SCC(s)=1, paths=1360, flows=0, intents=0
onos> intents -s | grep All
All total= 0 installed= 0
All withdrawn= 0 failed= 0
All installReq= 0 compiling= 0
All installing= 0 recompiling= 0
All withdrawReq= 0 withdrawing= 0
onos> onos:intents-events-metrics
Intent Submitted Event Timestamp (ms from epoch)=1420657420124
Intent Submitted Events count=35096 rate(events/sec) mean=0.231870 m1=0.000258 m5=0.168564 m15=0.276660
Intent Installed Event Timestamp (ms from epoch)=1420657420163
Intent Installed Events count=34516 rate(events/sec) mean=0.228038 m1=0.000258 m5=0.168190 m15=0.270522
Intent Withdraw Requested Event Timestamp (ms from epoch)=0
Intent Withdraw Requested Events count=0 rate(events/sec) mean=0.000000 m1=0.000000 m5=0.000000 m15=0.000000
Intent Withdrawn Event Timestamp (ms from epoch)=1420657970097
Intent Withdrawn Events count=23898 rate(events/sec) mean=0.157888 m1=0.636097 m5=0.545618 m15=0.318088
onos>
onos> onos:intents-events-metrics | grep count
Intent Submitted Events count=35210 rate(events/sec) mean=0.232233 m1=0.272907 m5=0.329655 m15=0.319668
Intent Installed Events count=34630 rate(events/sec) mean=0.228407 m1=0.272907 m5=0.329495 m15=0.315045
Intent Withdraw Requested Events count=0 rate(events/sec) mean=0.000000 m1=0.000000 m5=0.000000 m15=0.000000
Intent Withdrawn Events count=23898 rate(events/sec) mean=0.157623 m1=0.009073 m5=0.233205 m15=0.239605
onos>