BIG prints from the GH3

I'm a huge fan of the newest 16 megapixel MFT cameras, and am pretty convinced that at print sizes up to at least 17x22, and ISOs up to about 1600, larger sensors have no visible quality advantage. All that said, reality has to intrude. The GH3 delivers about 73 ppi to a 5 foot wide print. My tests show such low ppi will result in a very noticeable decrease in apparent sharpness. I wouldn't print an image at that ppi unless it was to go in a location where viewers couldn't get very close.