[quote=Scio]
I think so, since you'd need a ton of chakra to perform those jutsus.Actually, any Genin who can use elemental jutsus since it wasn't that common.
[/quote]

Shinka is a ninjutsu specialist. He focused most of his training on improving his chakra control and capacity. Because of this, he's sub par at everything else. Think of him as a ninjutsu version of Lee.