Simple case structure with local variables VS PC architecture VS Event structure (Time analysis)

[abikutn]

Here is the result of time analysis between a simple program to run a stepper motor based on 3 different methods. I see there is no great time optimization between the first two and also there first method seems to be slighlty faster. 

I believe ( with the help of this forum and other literature sources) that PC should be much a much better method when processing speed and compiler optimization are concerned. Whereas, the 3rd one based on State machine is nearly 50% faster than the first two.

Why is this ?

What could be the possible reason for this kind of results. Is it because the way I programmed is not good and efficient ?? (attached are all the programs)

1. Case structure with local variables.

2. PRODUCER CONSUMER PROGRAM

3. State machine with Event structure

PS: ( The time analysis of previous post I made where wrong as the motor ran twice, the above times are the right ones.)

[abikutn]

This attachement contains all program (names mentioned clearly)