Comparing the real CL650 and the HS CL650 PFD when at 0 RA there is no difference with the runway display. If there is, it's a matter of pixels.
"Misleading naïve buyers" is a strong accusation to make - feedback is always welcomed but unfounded comments like that are not.
Your linked videos do not work, I would invite you to share a photo comparison of the real 650 and HS 650 PFDs showing where it is wrong.
Best regards,