I have solved your problem. I saw your other thread and it seems you used the commands from this website instead of mine earlier in this thread:
http://www.technobuzz.net/create-bootable-mavericks-os-x-iso-step-step-guide/
Most of the commands are exactly the same as mine, except the one causing you trouble.
In that article, they use the command
hdiutil resize -size `hdiutil resize -limits /tmp/Mavericks.sparseimage | tail -n 1 | awk ‘{ print $1 }’`b /tmp/Mavericks.sparseimage
and I use
hdiutil resize -size `hdiutil resize -limits /tmp/Mavericks.sparseimage | tail -n 1 | awk '{ print $1 }'`b /tmp/Mavericks.sparseimage
They look the same, but they are using different quote symbols around { print $1 }. Tecnobuzz's is ‘{ print $1 }’ which is incorrect. It should be '{ print $1 }'
It's quite hard to see the difference, but look hard enough and you will see it.
If you make an iso for 10.9.5 with the correct commands it should be about 6.1GB.