It's not oversimplification, it's just reality. In terms of signal quality there are 2 factors. There's the resolution of the image and there's the frame speed. If you try and take a 480 signal and run it through a big screen 1080 set, you get a 480 signal, stretched to fill the big screen. If you take 30 full frames per second and stretch it over 60 frames, what do you get? I don't even know why you aren't accepting this basic concept, considering your wii will do your 460 in progressive. Is the signal being passed out somehow beefed up with more information than a regular 30 frame per second source? Where is the extra information coming from that doubles the frames to make it change every 1/60th of a second?
The fact that you understand the basics of how interlaced works yet are unwilling to admit that with half the information being sent out, half the information is received is baffling. How many times do I have to explain this? Half the frame information = half the frame. That means if you have a P and I TV next to each other and watch the same movie, ifyou pause them at any given point, half of the pixels on the interlaced TV will be from last frame, and all the pixels on the progressive TV will be from the current frame.
If that's perfectly acceptable to you, fine. Those are your preferences. There's nothing wrong with accepting a last gen standard of media. However when you say there's only a slight improvement, when the frame rate is effectively doubled, you're just wrong.
Wii does 480p widescreen, not some imaginary 460 format you seem to be trying hard to pull out of your ass.
The image IS changing every 60th of a second, it just isn't the entire image. TVs have integrated circuitry that filters the input to compensate for the blended scanlines, and traditional tube sets have large phosphors that fade more slowly than normal to mitigate the two-frames-combined effect on top of that (one of the many reasons why 60Hz is normal and acceptable to everyone on a TV, yet 60Hz is the bane of many PC users, myself included).
There's definitely a lot more to it, and claiming that 60Hz Interlaced is 30fps, period, no more, is a gross oversimplification. You are definitely seeing more variation in data than you would in a 30fps progressive scanned display. You are seeing 60 discrete images per second, not 30. You're completely ignoring the fact that TVs are
designed to handle interlaced signals.
I don't just understand the basics, man. I understand the technology behind it and the reasons for its existence. I could probably go into TV technology and engineering if I really wanted to.
The thing is, this isn't even a "last gen standard" - this is a "two gens ago standard". PS2 was the backline laggard on progressive scan support. Nearly all Xbox games, and a rather large number of GameCube games support progressive scan (the majority of my personal GCN game library supports progressive).
The thing is, I GET MY PROGRESSIVE SCAN on the Wii, which is funny because you still can't seem to comprehend that simple detail. The difference, though, isn't exactly night and day. Yes, it's noticeable. It isn't nearly as noticeable as changing between 480, 720, and 1080 definitions on larger TV sets, which is the more pressing concern for the Wii - though rumour has it Wii will get some kind of mystery upgrade soon. No details are known, but Lanien hinted at it earlier in this very thread. My guess is Nintendo might unlock 720p for some limited usage. Probably not for 3D games, I'm guessing, but maybe for the menus/channels. Hopefully for the web browser - that would rock.
Anyway, enough on that tangent.
Fire, have you ever actually compared the same game in progressive scan and interlaced scan at the same resolution? I have, many times, on both my GameCube and my Wii. There IS a noticeable difference, but the difference lies in FLICKER much more than in motion. I could be biased, because Nintendo does have a rather legendary deflicker / interlace compensation filter... while Sony has legendary scaling issues, rofl. At least Sony did finally get rid of those with an update. Pretty funny though.