which racket is stronger?? would the 8000 be stronger if they person had the right technique??

You have been worrying about your racquet alot now. Both racquets are excellent and will not limit your smash power.

And two people with correct technique will probably find one or the other more powerful due to physical limitations and differences in stroke.

yeh um.. work on technique, i am sure most power comes from that alone, the actual difference from the racket itself is small between the two i guess.