Well, I finally decided to do it. Here's my comparing of the following cameras: Canon Digital Rebel (Original), Nikon D70, Olympus C-4000Z and Canon Powershot A530.

All shot at 200th of a second and 200 ISO. I dont know how well I did this, but it was my first time doing anything of the sort, so take it easy on me! :P

http://img.photobucket.com/albums/v249/avengedsevenfoldfan1/photography/comparea530.jpg

Why is it overexposed? Dunno.

http://img.photobucket.com/albums/v249/avengedsevenfoldfan1/photography/comparec4000z.jpg

Same goes for this one. Both are PAS's.

http://img.photobucket.com/albums/v249/avengedsevenfoldfan1/photography/compared70.jpg

Not overexposed.

http://img.photobucket.com/albums/v249/avengedsevenfoldfan1/photography/comparedrebel.jpg

Not overexposed again. Only on the SLR's?

So yeah, there ya go. I think the D70 has an advantage cause of its lens, but still.

Interesting, but what lens, what apateure and what was the metering?

Roger

I never have such dramatic overexposure problems with my A510 or my mom's A540, but I always use spot metering and focus (IMO scene metering and AIAF is a SHAM) and I NEVER use 200 iso in such a bright setting, compact digitals dont do high ISO well because the sensor/lenses are so small.

Also, I dont think Point and Shoot is a suitable class for the Canon Powershot A series, they've got a great range of manual controls, a better, more fair name for them is "Compact Digital"

Point and shoot is your classic disposable, one button, 2 modes, flash on, flash off.

Wow, some big differences. I'd be curious to see how they compared if you stuck them in full auto.

Why is it overexposed? Dunno.
Neither the A530 nor the C4000z are capable of stopping their lenses down far enough for proper exposure at the settings you used. You need to use a higher shutter speed, or lower ISO.