performance issue

[poseidon G]

i would like to improve my software performance. But I got weird result.
I examined 3 optional ways to insert rows into my MySql DB
1. Using Sql query (written in my java code)
2. Using store procedure.
3. Using bulk insert.
The result was unexpected, I tried inserting 50,000 new rows and the results are:
1. bulk insert 119000 ms.
2. Sql query 120703 ms
3. store procedure 169000

it’s seems not real I was expected that bulk insert would be much faster than store procedure which was should be much faster than regular Sql query.

I’m working with Windows XP
MySql 5.0.19
mysql-connector-java-3.1.12
doe's ant one knows how i got those realuts ?