Don't know if you want to take this to the Acoustics or GIK forum but here goes anyway. It seems that you are satisfied for the time being with your low frequency response and decay. And you have now shifted your attention to the area above 300 Hz (300-20khz specifically). This might be easier with REW but I bet Fuzz Measure is equally as good although I am unfamiliar with it.
That being said, I don't know if the above measurement was just one speaker or both of your Super V's together. I would recommend measuring only one speaker at a time (above 300Hz) to avoid phase interactions, and comb filtering which will render measurement inaccuracies in the higher frequency regions. You want to see how each speaker matches the other, particularly over the bandwidth of 250Hz to 4khz. 1/6th to 1/12th octave smoothing is enough. Higher than 1/12th octave and it gets difficult to interpret in room measurements particularly in the area above 300Hz. The vertical scale can span 50dB (as shown) but if you can change it to be 5dB increments, it might be more instructive.