Thanks to all who replied. This is the friend of
the guy who started this thread speaking. :)

The question was not put properly or at least only
half of it was put forth. The first half - already
stated is the difference in speed execution. The other
half - is the speed in development.

If you think only PRG against VCX, then PRG is the
easy loser.

But picture this:

You design your application in terms of classes.
Specifically, you put the design details ( like what
are the class names, and the members of each class )
in text files or dbf.

Next, you 'feed' this design into a CODE GENERATOR.
The code generator then generates the following:
1- the dbf files
2- the nonvisual classes defined in prgs
3- the visual classes again defined in prgs
4- the instantiation of these nonvisual and visual classes

And what do you do? Just the real meat of your application -
the logic of the business and all. The heck with the routine
form layout and design and all.

The problem is if you design with VCX, you have to do it
by hand one class after another! The problem also with our
visual class designer ( or at least as far as we know it )
is that it provides only one way traffic : you can convert
your vcx to prg, but no prg to vcx!

Thanks again to everyone who will take the time to read through
this and give their thoughts - they will help us a lot!