Regarding the 1.3 million : 1 contrast ratio ... How are you measuring your light output? What equipment are you using?
Contrast ratio is the ratio of light output when black is shown, compared to when white is shown. To measure you put up a 100% black field, measure light output, then a 100% white field, and re-measure.
As the black light output level approaches zero, the contrast ratio approaches infinity. Since CRT projectors can be set up to do 100% true blacks (where you don't see your hand in front of your face) if you set the brightness too low and/or have the tube bias (G2) set too low, just about any CRT projector can be set up to get a measurable contrast ratio of near infinity. Not really a useful number.
Does that mean it looks good? Not necessarily. You're likely crushing blacks and losing detail. Even if you use a 20-step parametric gamma adjustment like found on the Lumagen Radiance video processor to come out of black slightly faster than normal, you may still be crushing detail slightly. Best to set up a CRT projector such that black isn't 100% black. Do just a bit more. If you can't see your hand in front of your face with a 100% black pattern, it's most likely too low.
The other issue that few meters can properly read light output levels at the extreme lowest output. Most tri-stimulus colorimeters will not do a great job at such low output levels and give erratic results. All spectroradiometers most certainly are not up to the task. You really need to a use light meter (illuminance meter). Luckily they're fairly inexpensive. They're used by photographers mostly (and display calibrators who want to provide accurate contrast ratio numbers...
The other important thing to consider is that true 100% blacks are not required for a good image quality. As mentioned above, you don't need black so black that you can't see your hand in front of your face. Go back 10 years ago and that was the one thing that people used to brag about with their CRT projectors... but most people probably had them improperly set up and were losing detail by crushing blacks. Advanced (parametric) gamma control is a fairly new thing. It used to be that we only had a single dial to control how fast we came out of black. With something like that it's fairly impossible to get 100% true black and proper gamma all the way down to black.
IMHO, once a digital projector can do blacks that are black "enough" to appear black, it is good enough and you don't mind looking at the image. Then ANSI contrast ratio (aka 'inter-scene contrast ratio') becomes much more important for proper image quality. This is the contrast ratio between black and white while both are shown on the screen at the same time. Many will tell you that ANSI contrast ratio is considerably more critical to image quality. If the projector can do adequate blacks (the JVC RS series does this well) then I tend agree: ANSI is more important. Most digitals do ANSI a *LOT* better than any CRT.
Where CRT can often really shine is on a average low light output (APL) scene where everything is dark. If brightness and gamma are perfectly set up you'll get a lot of detail. Almost 3D like and mesmerizing. Throw up one bright spot on the screen however and it'll wash out the rest quite a bit more than with a digital. That's just the nature of the technologies at play.
I like both technologies. I own a Barco Cine 8 Onyx "clone" projector which was well set up and provided fantastic image quality, especially with these darker, lower light output scenes. (One of the reasons I was always a Barco fan). It's being replaced by a JVC RS55 in the next month or two however and I look forward to better image quality in some aspects and possible lesser image quality in others. Both have their strengths and weaknesses. Apples and Oranges.