So Worf kills Gowron and then, instead of claiming the title of Emperor himself, basically says, "Hey, I'm not the guy but my buddy here would do a heck of a job." Did this strike anybody else as not a particularly Klingon way of doing things?
What would have happened had Worf assumed the job? Would he have been regarded a Federation puppet and dispatched fairly quickly?
Or if he did refuse, wouldn't the Klingons do what they tried to do after Kempec died a (seemingly) natural death and had two men battle for the job.
Would Martok have even bothered as he was reluctant to take the job even when it was being handed to him?
Worf might have been ok but he only really had the house of Martok backing him up so i think he would have been killed rather quickly.
Martok was the better choice he was highly respected general in the empire.