Good thing all those people buying a T4i are buying a CAMERA and not just a SENSOR eh? This is also an entry level camera, I highly doubt many people who buy these even edit much on a computer. No editing means you won't see the increase in DR anyways.
If you buy a D3200 you don't get...
1. DoF preview button
2. flash control
3. 5FPS Shooting (only 4FPS)
6. 9 cross types
Plus you don't have Nikon's build in af motor so older lenses will not af and i personally think 24MP is way too much for an entry level APS-C sensor camera (I think 18MP is too much as well). Due to the high pixel density, it will take good lenses and good technique to shoot nice crisp shots... unfortunately, most people buying an entry level camera lack good lenses and good technique.
Hogwash about the high-pixel density requiring hi$ lens or technique... anyone in the market for a D3200 sure as hell doesnt have Nikkor AF lens so the screw drive issue is moot.
Lastly the 3200 is Nikons bottom level body is it not? So its not prudent to compare body features with a t4i series especially in a thread discussing image quality. Which we all know Canon sensors in any range cannot compete with Nikon's on any level.