This is the 13958th most frequent Korean word.
맞먹을
"To rival" or "to be equivalent to."
Here, '맞먹을' describes the equality or equivalence in skills between the two teams.
그 두 팀은 실력이 맞먹을 만큼 치열하게 경쟁했다.
Those two teams competed fiercely as their skills were on par.
'맞먹을' in this sentence is used to compare the knowledge in the book with the depth expected from college-level lectures, implying equivalence in quality.
이 서적의 지식은 대학 수준의 강의에 맞먹을 정도로 깊다.
The knowledge in this book is as profound as that of a college-level lecture.
Here, '맞먹을' signifies that his experience reaches the level of the senior employee's experience in terms of depth and value.