Your argument about employer hiring poly student is flawed.
Employers hire poly students not because they have more experience,
it is because of the diploma! And your comparison is flawed also
because the average JC student will not enter the workplace until
they graduate from the university.
If you think a degree does not mean a good stable job, then pls
enlighten me why so many poly grads are trying to enter uni now?

I do have alot of jc friends studying with me in Uni now,the
truth is they tend to have harder time to adapt in studies than us
poly grads as the subjects we study in Uni have being taught before
in poly mostly and the attachment to companies made us gain some
working experience.
Depends on what you're studying. I think poly students will have
difficulty in Maths, for example, compared with jc students. And
with so many cross faculty modules to take, the advantage they hold
is reduced.
And don't talk about working experience in school. If what you
study in school are not used in the working world, what makes you
think the opposite is true?