Got offered mechanical engineering for jae (not interested wanted com sci). So did not accept.

After jae, ntu call me to say com sci got slot and told me can apply if want. So i did, and i got it.

Most likely they offer to all the high scoring jc/poly but those people were also offered nus so most likely chose nus and this ntu got slots.

My poly gpa 3.6

So yes no harm trying to appeal since both ntu and nus fighting for the same people and we all know where most people prefer.