I'm not sure how the amount of aisle space per passenger is relevant to our comfort. That would be like crediting an airline with the legroom available in the galley and lavatories (dividing legth by number of rows).

The seat width is more like 17 - 18" in economy.

I don't see how you're going to find anyone to agree with you that the Embraer 170 is more comfortable than the 777, which is what your statistics suggest (and strongly so, I might add).