help different score on crs calculator and express entry profile!

[user0723]

Hi everyone,
I need help regarding my crs score as it comes different per crs calculator and actual express entry profile

This is from CRS calculator at ircc.canada.ca website:

Core/Human capital factors
Age = 99
Level of education = 120
Official Languages = 130
First Official Language = 130
Second Official Language = 0
Canadian work experience = 40
Subtotal - Core/Human capital factors = 389
Spouse factors
Level of education = 0
First Official Languages = 0
Canadian work experience = 0
Subtotal - Spouse factors = 0
Skill transferability factors
Education (to a maximum of 50 points)
A) Official Language proficiency and education = 25
B) Canadian work experience and education = 13
Subtotal = 38
Foreign work experience (to a maximum of 50 points)
A) Official Language proficiency and foreign work experience = 0
B) Canadian and foreign work experience = 0
Subtotal = 0
Certificate of qualification = 0
Subtotal Skill transferability factors = 38
Additional points (to a maximum of 600 points)
Provincial nomination = 0
Job offer = 0
Study in Canada = 15
Sibling in Canada = 0
French-language skills = 0
Subtotal Additional points = 15
Comprehensive Ranking System formula grand total = 442

and this is from actual profile:

Your overall score 462
Score breakdown
Score breakdown
Human capital
Your score is based on factors such as your skills, education, Canadian work experience and language ability.
Spouse
Your spouse's score is based on their level of education, language ability and Canadian work experience.
Skill transferability
Your score is based on your education, job experience and relevant qualifications (for trade occupations).
Other
Your score is based on factors such as a job offer, a nomination from a province or territory, siblings, French language
skills and post-secondary Canadian education.
Criteria Score
CRS - Human Capital - Age 99
CRS - Human Capital - Level of Education 128
CRS - Human Capital - First Official Language Proficiency 130
CRS - Human Capital - Second Official Language Proficiency 0
CRS - Human Capital - Canadian Work Experience 40
Criteria Score
CRS - Spouse - Level of Education 0
CRS - Spouse - First Official Language Proficiency 0
CRS - Spouse - Canadian Work Experience 0
Criteria Score
CRS - Skill Transferability - Education 50
CRS - Skill Transferability - Foreign Work Experience 0
CRS - Skill Transferability - Certificate of Qualification 0
Criteria Score
CRS - Arranged Employment 0
Provincial/Territorial Nomination 0
CRS - Additional - PR or Canadian Sibling 0
CRS - Canadian education 15
CRS - Additional - French Proficiency or Bilingualism 0

My profile is IELTS R:8,W:7,L:8.5,S:7;OA:7.5
Bachelors in Computer Science Engineering 4 years from India, 2 years PG Diploma Canada, 1 Year Teer 2 Work Experience, Age 31 Single
I checked my express entry profile more than 3 time to find any mistake but found none, all info seems to be correct there.
Am i might be doing something wrong?
Please HELP!