Indeed, we were able to calculate our profits from the old project because the old project had been registered in the exchange market, while the new project still had to struggle through various efforts to get upfront funds for project development, so for me the old project was very promising than the new project.
but you are following a new bounty project campaign. 
new projects are full of surprises, but the old projects that are already registered on the exchange sometimes give small rewards. and if we count actually it is very unsuitable.