yea thats right.. the lumens (not a very good measure of light.. but anyway) output from the 45w CFL is equal to that of the 150w incandescent... but the incandescent puts out WAY more heat and of course uses about 3x as much power

so to say we have a 150w CFL (do they make those?? i have only seen the 125w envirolights...) means it would have to be equal to 450w of incandescent light.. id like to see one of those LOL

of course we can't alway apply that .. .because i have replaced all the 60w incandscent bulbs in my house with the equally rated cfl, which ended up being 13w.. so now all the bulbs in my house use up about as much as one did before :P

you are right, the amount of light output is the same, just the amount of heat put out and power used are different, but it is important to make light of the difference between real and equivalent ratings so the newb folk don't get too confused the first time they are out buyin lights