Are manufacturers deliberately misleading us or is there a problem accurately measuring contrast ratios. Here is an example. Take two projectors. The BenQ PB6200 DLP and the Panny AE700. Both have a contrast ratio of 2000:1. At an Australian website http://www.ausmedia.com.au/projectors_benq.html They did the ansi checkerboard pattern test and here are the results:- "The BenQ 6200 when tested using the "Real World" ANSI contrast ratio "checker board" was actually 28% better than the Panasonic AE700 overall. That's to say if you average the CR of all the modes tested. The Presentation mode was 20% better than the AE700 Dynamic mode, the Economy mode (the one we like) was 40% better than the Normal mode on the AE700. The Video Mode was about equal to the Cinema1 mode on the AE700." So why the difference. If the measurement is accurate. The 6200 is outperforming the AE700 by quite a bit. Are they any other sources of good quality non-supplier derived metric information.