I always thought that concept is quite fascinating, So let's say I have a 1440p panel, would gaming at 720 be the same thing as playing at native res? no loss of IQ whatsoever? not even a little bit?
In theory, gaming at 720p on a 1440p display should be the same as 720p on a 720p display. In practice, some displays have crappy scaling algorithms that add unnecessary blur anyway.