evenly matched in ability
A yojijukugo used when two people or sides are very close in skill or strength, with no clear advantage.
The two teams were evenly matched, and the game went into extra innings.
He and she are rivals of equal ability.
A yojijukugo composed of 実力 (ability) and 伯仲 (being evenly matched, from the elder and younger brothers in a family).