With the real sgminer i hit 4.6Mh/s and with that strange "sgminer-with-optimized-quark-and-qubit-kernels" i can not even score a little 1Mh/s.
The results are real.
I also got bad results with 14.6, but decided to try with 15.4 beta, and confirm the results.
without much effort 280x 10,1 m
gpu/mem 1050/1500 -g 1 -w 64 -X 64