He's for sure crying over Hans death as he would have felt it (same with the planets getting destroyed) If Rey IS his daughter or prized student then that might add another reason he is crying.

Yes it does. Emotion can help OR hinder in a duel. To know which action to take, the force can guide when one is calm & centered. This is what Qui-Gon was attempting to achieve when he crouched & meditated during the Naboo duel.

Listen @ 1:00

Han also said that because Finn was bullshitting up a plan and they both knew it.

Perhaps you didn't read what I wrote or I wasn't very clear. When Han says that it's in a very specific context. At the time Finn had revealed to Han he didn't know how to disable the shields but that they would use the Force to do so. Then Han said, "It doesn't work that way." In other words, the Force is not a "get out of jail" free card that you can use whenever you're in a tight spot and Abrams would do well to remember that.

Also, Sith, and even Dark Jedi, draw power from their emotions. My interpretation of him pounding at his wound is so he'll feel the pain and draw power from it.

Are you really comparing using the force to bring down shields and using emotion and the force to tip the battle in your favor(which has happen alot of times in the series)?

My interpretation is closer to how actual human beings act. I know from experience.

I forgot about him. 

Okay, I'll bite because my memory sucks. When in the movies has a person with no Jedi training been able to use the Force (and emotion) to win in a fight against an enemy that has superior knowledge in both? (Force and lightsaber training)

Episode 1.

Maul outmatched Obi-Wan by a wide margin.