I...I guess it's up to the polarizing filter & additional CA remover tools to get things done...
I sincerely doubt that a polarising filter will make any difference to C.A.
...then why some lenses are more sensitive then others to CA ?
It's down to design and cost. The perfect lens doesn't exist so all camera lens designs are a compromise. The number of lens elements, which types of glass to use and manufacturing tolerances are all relevant. The videos available via Canon's Virtual Lens Plant
might be of interest if you have a little time to spare.