Updating the WPG rule (theory)

[Wizzard~Of~Ozz]

I've noticed more and more people are using Watts from a CF to equal 1WPG.. The way I figure these numbers are.

1 W CF bulb = 1.75W towards the WPG rule
1 W T8 bulb = 1.58W towards the WPG rule
1 W T12 bulb = 1W towards the WPG rule

I think this is the most effective way of doing things. assume 1W CF is anywhere near 1W T12 is an understatement.
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(supporting math)
CF = 100Lumens / Watt
T8 = 90Lumens / Watt
T12 = 57Lumens / Watt

the WPG rule is based closely to 57Lumens / Watt
so 90/57 = 1.58 WPG for T8 and CF leading by 1.75WPG
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There was discussion before about how the WPG is outdated.. I think this is more true then you know.

So for equal lighting

on a 55Gal tank, 200 Watts of T12 (5 bulbs) can be equaled with 128W T8 lighting (4 bulbs, save 1 bulb.) or 114W CF lighting (2x55w, save 2 bulbs.)

Does this seem like something that is reasonable?
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edit:
Well, on my "crusade" I've finished most of the typing.. hopefully it shows the major differences and can help some people.

Here is the page so far