You have just pointed out several important points here. Thanks for sharing your though. It can help this discussion to go into deeper level.
I'm not saying Taiji push hand should be a model that WC sticky hand should copy. The Taiji PH is just like a "diaper" to be used on a new born baby. After you have used it to develop your Tinjin, you no longer need it. Since Tinjin will stay with you for the rest of your life, you don't need to polish it everyday. You are right that no matter how good that you are in your sticky skill, you just can't sticky your opponent to death. You will need "finish moves" to end a fight.
I think we have redirect the discusion of this thread. This thread is "Define sticking - how sticky principle can be used in combat". Whether the WC "sticky hand" uses enough "sticky" principle or not is individual's choice. I prefer "hooking" instead of "sticking" myself. By using "sticking", my opponent can break it if he wants to. By using "hooking", it's much harder for him to break it. J
Of course when you use one hand to control your opponent's arm, you have only one hand to punch back. But at the same time, your opponent only has one arm to block your punch. Since you can pull your opponent's body toward your punch to cause a "head on collusion", you may knock your opponent down with 1 punch instead of many punches.
The "sticky" and "chain punches" are complete different principles. The sticky is like a rifle that shot 1 shot at a time. The chain punches is like machine gun than shot many bullets.
In the following clip at 0.40, he uses right Tan Shou to block his opponent's right punch. He then use his right hand to pull his opponent's arm "away from his striking path" and return with a left punch at his opponent's face. At that moment if he lets go his opponent's right wrist control hand, he can start his chain punches right at that moment. If his opponent can block his 1st or 2nd punch, he may have to use his stiky principle again. There is no gurantee there.
In other wirds, the "sticky" can be used to "set up" your chain punches. There is no conflict between these 2 principles at all.
http://www.youtube.com/watch?v=4qa6L...eature=related