[quote=@Webmaster]
<Snipped quote by DarkwolfX37>

The upgrades to even the Namekian Dragon Balls never changed what was considered a natural/unnatural death. Perhaps the Super Dragon Balls can violate the rule, but I doubt it would have been needed either way (since dying from fighting exhaustion isn't the most natural thing in the world).

Also night.
[/quote]

Wasn't fighting exhastion, he literally had to use his own lifeforce to fuel it. And Kami's balls had different strengths and weakness than Dende's. They could bring people back only once, for example.