I think these charts are handy for a quick comparison but they don't paint the whole picture. Both look like great devices but there are a few quirks about the Sony that don't sit well with me.
First, I've seen this mentioned in other places, but the non-disc memory media is not the industry standard miniSD card or variant -- it's Sony's proprietary Memory Stick. This might be great for people who already have Sony products but to those of us who don't, it's an additional expense and yet another type of recording media we have to keep around the house.
Second, the Clearvid sensor used in the Sony seems flawed in design. It doubles the "sensitivity" to green colors -- at the expense of reds and blues. In clips I've seen from the HC7, greens looked great but reds looked closer to purple (magenta?), which made the image look somewhat unnatural to me.
An important point that's not mentioned in that chart is battery life. By all accounts, the HC7 has 20% less battery life compared with the HV20. That's a really big difference in my mind since I want the freedom to shoot for long stretches of time.