« on: February 26, 2012, 03:50:08 PM »
the comparisons are between different sensor generations, with 2+ years difference in release. A more relevant comparison would be between the 5d MkII and D700 or the 7D and D300s. Even the 1D MkIV is now over two years old.
The new G1X sensor which is fairly large, does not look very promising in that regard, but perhaps they've made it deliberatly worse than the 7D sensor to not compete within their own lines.
There's also the thing that Canon simply don't have the Sony Exmor technology. The big difference is that the ADC is on chip. Canon does not have that. Sony Exmor is a minor revolution (for low ISO). What you can expect from Canon is a gradual evolution. You'll certainly see "good enough" performance, but I'll (almost) eat my shorts if it will be world-leading.