By the end of Safe House, I was led to think that Tobie Frost (Denzel Washington) was the good guy. That believe was challenged when he asked the other (good) guy to be better than him. Now, I am not a very careful viewer, so something along those lines may have been mentioned.
Tobin Frost was a good guy.
When he asked "the other good guy" to be better than him, he was, in effect, saying: