You do realize that Tit For Tat is the dominant strategy of PD, right? [1]

[1] Ok, not strictly true. Other strategies can dominate under certain conditions (finite and pre-known number of iterations, possibility of signal error, etc) but I don't feel that those conditions apply in this case.

This prisoner's dilemma has one round with different rewards.

Also, don't correct people with 'you do realize' because it makes you seem like an asshole.