The HV20 indeeds fall short of 1080 lines. So does the HVX, the A1 or the HPX500. "True" 1080p is a tricky word. Technically you can't have full 1080 resolution unless you have enough pixels on your chip, but none of these camera have it. Their chip size is a compromised between performance quality and cost. In a real situation you're never going to be able to get the full number of resolution lines because there's so many other factors involved. Saying something isn't "true" HD because it falls short of 1080 lines is just wrong because this disqualifies nearly every HD camera in existence.
This is like when people debate that 1080 24F isn't "true" 1080p because it's lower resolution. Look at some 1080 footage from the A1 versus a comparable camera with "true" 24p and tell me whether you can see a difference. The proof is in the image so people need to stop nitpicking.
