I think it's hard to argue Grayson benefits from the events of Bulletstorm, and even moreso that he is in a better position by the end of the plot. We might see he has redeemed himself (I actually don't, he betrays his friend a few times to try and kill Sarrano and he almost always never listens to them) but he definitely doesn't, as SageRuffin pointed out.
As for the speech I can't seem to find it and I definitely cannot remember it. I did find his sacrifice though, and I think that while he may have forgiven Grayson, the truth is he did die because of him, and Grayson failed to fulfil his promise of saving him.
As for the speech I can't seem to find it and I definitely cannot remember it. I did find his sacrifice though, and I think that while he may have forgiven Grayson, the truth is he did die because of him, and Grayson failed to fulfil his promise of saving him.