Yes it's a good factor but not just that factor will tell us on how good a coin is. I'll prefer to have low supply coins like bitcoin which is really my first bet. Having 21 millions of supply and almost 17,500,000 bitcoin's were already mined so there's few more bitcoins to be mined which will really create an impact to make its value higher in the future. I don't know where the other coins got the idea of creating a token that has more than 100,000,000 million supply up to billion.