Tailored from one of another post - Cant comment on chances, but here is the theory -
Final Selection Decision at VO -
Determination of Eligibility through Verification
1. Once the file reaches the Visa Offices they are queued up for processing. Once the file move to the table, AOR might be sent out to confirm receipt of application at the VO and the Background checks and documentation checks are initiated for the application.
• Interview Queue
The VO may render a decision that, upon review of the application and supporting documents, the applicant is not required to
attend a Personal Selection Interview.If a Personal Selection Interview is required, the application will be placed in queue to await
an interview date. Your interview will not schedule at this time.
• An Interview Waiver
Within the correspondence of the interview waiver the VO may also request that further documentation be submitted. The
submission of PCC, updated forms, RPRF, Medical (In India PP request is also club with these docs).
• Refusal of the application
Upon the initial review of the application, the immigration officer may decide that the documents submitted do not establish the
level of qualification required by Canadian Immigration. And may be during the background check Work experience or educational
documents was not verified.
Selection Interview
1. The VO is entitled to request that an applicant attend a Personal Selection Interview if he/she has concerns regarding any or all of
the following:
• Authenticity of the documents submitted
• Truthful and total completion of the forms
• Verification of the information entered on the forms
• Clarification of the specific information provided to Immigration Canada
Note: The VO will not conduct and Interviews to assess language ability.
Under the new regulations, selection standards are more objective and clearly defined. It is expected that in most cases visa officers will be able to make a decision to approve or refuse an application based on the documentation provided by the applicant without a election interview. However, in some cases, an interview may be necessary for a number of reasons. Especially, if you do not meet the pass mark in effect and are applying under “Substitute Evaluation”, you are more likely to be called in for an interview to decide if there are reasonable grounds to exercise positive discretion
Purpose of Interview
If required, a selection interview would be conducted for several reasons:
• To verify the validity and truthfulness of certain information provided on the forms and documentation submitted with the
application.
• To clarify any specific information and inconsistencies.
• To clarify certain issues as regards to the background of the applicant and/or his/her dependents.
• To verify that the applicant possesses the necessary funds to settle in Canada.
• To confirm that the applicant is not inadmissible on security grounds.
• To verify if there are sufficient grounds to use positive discretion, if the applicant's point total is below the current pass mark.
• Under the new regulations, visa officers will no longer conduct interviews to assess an applicant's language proficiency or personal
suitability for immigration purposes.
Interview Waivers
At their discretion, visa officers may approve an application for permanent residence in Canada without holding a selection interview. An interview waiver will significantly expedite the processing of the application. Usually, well-prepared applications, which are complete in every detail will increase the chances of an interview waiver.
When assessing an application under the Skilled Worker category, visa officers will consider several factors before granting an interview waiver such as:
Quality and completeness of the application forms and documents
Proof of the applicant's English and/or French language ability
The applicant's educational qualifications
The applicant's professional qualifications such as quality of his/her educational background and work experience
The applicant's potential for adaptability, resourcefulness and motivation to successfully establish himself/herself in Canada
The applicant's overall integrity and credibility
Nevertheless, a selection interview may occasionally be required for even highly qualified applicants, as Citizenship and Immigration Canada (CIC) officials randomly select such applicants to test the accuracy of their interview-waiving criteria for quality assurance purposes.
Rarely, it is also possible that after an interview waiver has been granted, the visa officer may change his/her mind and require the applicant to come to the selection interview or vice versa.
after a long wait!!! 
