If you think about how elbow extension works, it's like a strap being pulled over a pulley. There is no reason for it to be stronger or weaker at any point. However, if you look at a pressing motion near lockout you see that the angle at the elbow changes more relative to the distance of the press, therefore in a press, the triceps appears stronger at lockout. It's the same reason you're stronger at the top of a squat than at the bottom.
This is what I'm trying to confirm graphically. Is ideal muscle balance, truly an equal power balance between antagonist and protagonist muscle groups, throughout ROM?
Continuing with the elbow. Is it ideal for the elbow to be able to generate equal power in both directions? What about the hip, shoulder, knee and ankle?
Surely with the ankle, it is hardly likely for someone to be able to generate similar power, dorsiflexion vs. plantar flexion. The Second class lever system of the ankle gives an advantage to plantar flexion.
Exercises like the Row vs. Bench Press. Should you really be able to pull equal amount of weight as you push? Leg Extension vs. Leg Curl?
Assuming, the goal is to establish a 1:1 ratio between push:pull power, at what ratio, does it become an injury risk?