Sorry, but I don't understand the basis for the opinion presented by a couple of people that the Kaktovik numeral system is similar to the Roman one. Is that be

Sorry, but I don't understand the basis for the opinion presented by a couple of people that the Kaktovik numeral system is similar to the Roman one. Is that because both of them use short lines as the sole element to build digits/numbers?! But Kaktovik is a positional system while Roman is not!