おっつかっつ

noun which may take the genitive case particle 'no'

much the same; nearly equal; neck and neck

Colloquial expression used when two things are so close that it's hard to tell which is better or ahead; often implies a tie or dead heat.

• 二人ふたりの実じつ力りょくはおっつかっつだ。

  Their abilities are about the same.

• この二ふたつの案あんはおっつかっつで、どちらがいいか決きめられない。

  These two proposals are neck and neck; I can't decide which is better.