This may be a silly question, but what volume setting did you have the 950 at when you did each? The typical approach around here is to set the 950's main volume to 00 dB before doing anything with the internal test tones. That should be pretty darned effective, but if you then changed the master volume while going through DVE you're guaranteed different results. Even if you don't change the volume, the DVE tones may be designed for a different dB level.

Another thought... Are the differences consistent across the board? (For example, you are 4-6 dB off on each channel using the two methods.) If so, I wouldn't worry about it, since the main purpose of calibration is to gain rough equality in volume from each speaker relative to the others.

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