Ok, explaining my vote.
I said, almost the same, but you have to measure...
Why? Well, for lightbulbs, the wattage rating is sometimes a funny thing.
An Incandescent 20 watt bulb uses 20 watts of power. But a 20w florescent outputs the same wattage with less current. Why? Because they blink 60 times a second...not a constant draw.
You have clear bulbs which clearly are the biggest wasters. Some frosted and coated bulbs reflect light energy back in causing the filiment to get hotter and generate more watt output without using more power. 60 watt MISER bulbs from 55 watts of power are a prime example.
Then you have Bulbs with magnified heads, such as many penlights. You think the output is weak now? Look at it when it isn't focused, or reflected.
In short, it's a VERY tricky question to answer clearly in any one fasion. Look at the magnified Striker-VG. 3w of power amplified to 5 or 6 watts. Still love that thing.
That is why it is hard to convert lux to lumens, and vice verser. Bulb design and size has much to do with it. ex: A 5w Xenon bulb for a flashlight, is maybe 3/8" long. The actual gas glows to create light. If you have a 5w Xenon night light, it is about 2" long. The larger size is going to look like much more light. Why? More surface area.
It's the age old argument of comparing apple and oranges, but saying the best apples taste more like pears. Hmm, pear-apple...is there such a thing? I want one now.