Yea, I understand that, but the effects are the same. Overheating and massive battery loss. You can jailbreak your iPhone and use an app like iOverclock, which does the same thing, it removes the CPU throttling.
Comparing the stock iPhone 5 to a phone with the CPU throttling turned off, is not a valid comparison.
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Sorry to say this, but the last S3 I saw in person had a very consistent stutter even on the homescreen. It was almost assuredly because the phone had a moving slideshow wallpaper that rotated through the photos on the phone, but that's not the point.
I literally have never seen an Adroid phone in person that didn't stutter, and the S3 is no exception.