ProE is good in large assembly structure, Catia is good in surfacing.

Catia has an added advantage of direct Catia ABAQUS interface.

ProE has interface with ADAMS through Mech/Pro (and now an interface only version is also available) while having its own MDO.

Catia has direct interface with LMS virtual Lab while having its own mechanism modules,

ProE has an added advantage of superior BMX module.

Thank you sir.

The same as above

yeah same as above and both the software have their own area of application although they serves the same purpose.