I have some photos of the differences between 4x65 watt current dual daylight bulbs and 2x dual daylight plus 2 x 9325k. I've never seen this particular comparison, perhaps it will be helpful for others.
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This is 2x 6700/10,000K with 2x 9325K lamps:

Direct link to 640x image shown above.
This is 4x 6700/10,000K lamps:
Direct link to 640x image shown above.