They each have a different number of shares on issue....different market caps.
VCR valued at $186 million
HTW valued at $155 million
VCR has approval in the EU and OZ and has recently posted revenues of around $5 million for the last FY. HTW has no approvals to sell and has very little revenue.
VCR around 140 implants
HTW 20 implants
Draw your own conclusions.....