Score for Custom Job Description:
1. Job Title: 10/10, 10/10, 10/10
2. Introduction/Overview: 6/10, 0/10, 0/10
3. Roles & Responsibilities (or Job responsibilities): 9/10, 10/10, 10/10
4. Years of Experience: 10/10, 10/10, 10/10
5. Education Qualification: 10/10, 10/10, 10/10
6. Skills/Knowledge: 9/10, 9/10, 9/10
7. Domain/Industry: 0/10, 0/10, 0/10
8. Key Competencies: 8/10, 8/10, 8/10
9. Employment Type: 10/10, 10/10, 10/10
10. Company Overview: 0/10, 0/10, 0/10
11. Benefits & Opportunities: 0/10, 0/10, 0/10
12. Location & Travel: 10/10, 10/10, 10/10

Explanation of Scores:

1. Job Title:
The job title is clear, complete, and relevant to the industry standard.

2. Introduction/Overview:
The introduction is somewhat clear but lacks specific details about the company, making it incomplete and not relevant as per the benchmark job description.

3. Roles & Responsibilities:
The roles and responsibilities are clearly defined, complete, and relevant to the benchmark.

4. Years of Experience:
The years of experience required are clearly stated, complete, and relevant.

5. Education Qualification:
The education qualification is clear, complete, and relevant.

6. Skills/Knowledge:
The skills and knowledge required are clearly stated and relevant, but the section is slightly less complete as it could benefit from more specific examples of projects or technologies.

7. Domain/Industry:
No details are provided about the domain or industry, so this section scores zero for all parameters.

8. Key Competencies:
Key competencies are implied within the roles and responsibilities but are not explicitly listed, making this section somewhat less clear and complete.

9. Employment Type:
The employment type is clearly stated, complete, and relevant.

10. Company Overview:
No company details are provided, so this section scores zero for all parameters.

11. Benefits & Opportunities:
No details about benefits or opportunities are provided, so this section scores zero for all parameters.

12. Location & Travel:
The location and travel requirements are clearly stated, complete, and relevant.

The custom job description generally aligns well with the benchmark in terms of the job title, roles and responsibilities, years of experience, education qualification, skills/knowledge, employment type, and location & travel. However, it lacks clarity, completeness, and relevancy in the introduction/overview, domain/industry, company overview, and benefits & opportunities sections.