I am not very interested, and for this reason not very good, about theoretical/technical information because what matters to me are the results I get and that is it. But I found curious that with such difference on lumens and watts between both bulbs I only had to change 1 stop on my camera by switching them.
I know the proper test would be by using one bulb at the time but since I was just playing I first got the daylight bulb as main light, using a reflective silver umbrella. While the Philips LED bulb in a small softbox as a side light.
The camera setting was f2.8, 1/30 at ISO 200.
Both light distance was about 2 meters.
I like the power of the daylight but I like the warmer light from the LED bulb. It makes the skin softer as far as I could notice both in colour and in black and white. The light colour temperature also influences the image contrast, in black and white.
Notice that because I didn't change the light temperature on my camera setting, that was 5000k, I did some changes on it in pos edition, because the warmer light from the 2700k LED lamp was too warm with the 5000k camera setting.