I used to prefer JScript, because I was familiar with it from HTML scripting and I liked that it used curly brackets {} like C++.

But this is reason enough to prefer Python for scripting in Softimage:

// Log number of selected components
LogMessage( VBArray(Selection(0).SubElements).toArray().length )

In Python, you don’t have to deal with the VBArray stuff:

Application.LogMessage( len( Application.Selection(0).SubElements ) )

And when you have convenience shortcuts defined, it becomes even nicer:

log( len( si.Selection(0).SubElements ) )