Query Result Mismatch in MongoDB (Sharded Environment) - mongodb

Question

What I am doing is:
1) Created a new shard database.
2) Created two new shard collections (source and target) and dumped data in it
3) Then I am running two map reduce on two sharded collections one after the other And putting the result of both the MR in same collection (say j_30052014125600).
This is perfectly working fine. I am running all this on sharded cluster having
1 shard server
1 config server
2 replicas
The problem is when I executed the query to count the documents
db.j_30052014125600.find({"value.ID": 305763}).count(),
I got the count 2 which is correct, but when I executed the find query
db.j_30052014125600.find({"value.ID": 305763}),
I got just one document.
I have copied here a small screenshot which will help you guys to understand.
Why this is so? Can any one please explain me?
Thanks
Update:
mongos> db.j_30052014125600.find({"value.ID": 305763}).explain()
{
"clusteredType" : "ParallelSort",
"shards" : {
"firstset/192.168.1.1:10002,192.168.1.2:10001" : [
{
"cursor" : "BasicCursor",
"isMultiKey" : false,
"n" : 0,
"nscannedObjects" : 519034,
"nscanned" : 519034,
"nscannedObjectsAllPlans" : 519034,
"nscannedAllPlans" : 519034,
"scanAndOrder" : false,
"indexOnly" : false,
"nYields" : 0,
"nChunkSkips" : 1,
"millis" : 508,
"indexBounds" : {
},
"server" : "VM1:10002"
}
],
"secondset/192.168.1.1:10003,192.168.1.3:10004" : [
{
"cursor" : "BasicCursor",
"isMultiKey" : false,
"n" : 1,
"nscannedObjects" : 280944,
"nscanned" : 280944,
"nscannedObjectsAllPlans" : 280944,
"nscannedAllPlans" : 280944,
"scanAndOrder" : false,
"indexOnly" : false,
"nYields" : 0,
"nChunkSkips" : 0,
"millis" : 289,
"indexBounds" : {
},
"server" : "VM2:10004"
}
]
},
"cursor" : "BasicCursor",
"n" : 1,
"nChunkSkips" : 1,
"nYields" : 0,
"nscanned" : 799978,
"nscannedAllPlans" : 799978,
"nscannedObjects" : 799978,
"nscannedObjectsAllPlans" : 799978,
"millisShardTotal" : 797,
"millisShardAvg" : 398,
"numQueries" : 2,
"numShards" : 2,
"millis" : 533
}