So you're getting paid a fixed amount for the work and the others are getting paid depending on how the project goes? It sounds like they're taking a risk on the project that you decided not to. The MD for instance will get a huge payout if it works and potentially lose money paying you if it flops. That's how it goes. I have known of companies where people doing exactly the same job were payed differently due to how they negotiated when employed.
If you're being paid what you agreed for the work you agreed to do then it sounds like you should complete the work. if others have a better deal than you, then you may do better when negotiating you next contract. These 4 months will be a good learning experience.
So you're getting paid a fixed amount for the work and the others are getting paid depending on how the project goes? It sounds like they're taking a risk on the project that you decided not to. The MD for instance will get a huge payout if it works and potentially lose money paying you if it flops. That's how it goes. I have known of companies where people doing exactly the same job were payed differently due to how they negotiated when employed.
If you're being paid what you agreed for the work you agreed to do then it sounds like you should complete the work. if others have a better deal than you, then you may do better when negotiating you next contract. These 4 months will be a good learning experience.