There is no quantitative way to do it as any measure will be gamed or will not be representative of all the dimensions of what makes a successful project. High

There is no quantitative way to do it as any measure will be gamed or will not be representative of all the dimensions of what makes a successful project. High performing teams that I've been on rely on developers to meet their own given estimates and effectively communicate. It is pretty obvious when someone is repeatedly dodging as they will be unable to convincingly explain their status to their own team members. Basically, each team member holds each other accountable. This only works if they have strong, shared incentives.