What is the trick to the final boss fight in Uncharted 3?

Talbot's got a limited move set, and most of them involve quick-time events, for example:

• He takes a swing at you, which you dodge and counter
• Talbot pins your arm behind your back, where you bite his arm to get out
• You and he cross arms, but he drops the knife into his other hand for a quick slash (this appears to be the trickiest one - you have to go from mashing the circle button to hitting triangle and you have a very short window in which to do so)
• He knocks you down, and you kick him in the head to break his hold

Screwing up more than one of these in a row on Crushing seems to be a recipe for game over.

There's a particular pattern to when he goes for the final kill (and Sully shows up to take a shot) and I don't see much of a pattern about when this happens. It might just be a function of how much damage you do to him, as most of the videos I've seen where he goes down quickly, Nathan's always on the offensive, punching constantly when not involved in a QTE.

Here's a video of someone beating him on Crushing in about 2 and a half minutes, although there's no commentary or other prompts so it's tough to glean much information from it:

The magic formula is to keep attacking him... Standing around waiting is useless.. I countered him about 4-5 times in a row to beat him.