Does running IDEA64.EXE get you the same results as running IDEA.BAT?

I run IDEA in 64 bit mode, in fact I don't even have a 32 bit JDK installed on my machine.   I usually start IDEA by running IDEA.BAT in the "bin" directory of the installation.  (If I click directly on IDEA.EXE, it squawks about no 32-bit JDK.)

I recently noticed IDEA64.exe in the "bin" directory and tried running it, and hey, it works!   

My question - is there any difference in running IDEA through the IDEA.BAT file versus running the IDEA64.EXE directly?  It appears to, but I thought I'd check to be sure.

I currently have the following environment variables set:

IDEA_JDK=C:\Program Files\Java\jdk1.6.0_33
JAVA_HOME=C:\Program Files\Java\jdk1.6.0_33
JAVA_OPTS=-Xmx1024m -XX:PermSize=256m

The JDK is the x64 version.  

Anybody know the answer to this?

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