[quote=@Expolar]
<Snipped quote by Expolar>

I don't know if Gildarts has it, but when he showed Natsu how much power he had and basically wiped away Natsu will and motivation to fight during the Tenrou arc. That was something that didn't happen in to Natsu very often so I thought Gildarts has it but hasn't really shown it yet or something. 
[/quote]

That or Gildarts's first origin is hella scary strong.