Hi CQB,
Like the name btw, very catchy and it's something everyone should learn a little bit of.
Going back to your post...
LF bulbs are measured by the factory in bulb lumens, so your EO-4 is putting out approximately 123.5 torch lumens. Multiply your bulb lumens by .65 (65%) and you can get a rough conversion from bulb to torch lumens. Pretty cool, huh?
...but you also mentioned using a Pila 3.7V for the 6P. The battery yields 3.7V versus the standard 6V, so it will be less intense (using any bulb). Hope this helps!
Dudemar