Hard to say. The interviewer could be someone who is just going to run through a list of questions and offer little in the way of conversation. Some are bad interviewers who are going to ask questions that require little more than "yes/no" answers. In either case, the interviewer can come away believing that you gave good answers, had good social skills, responded appropriately. Or not.
No one interviewer holds all the power although some can have considerable influence with the decision-makers. Those who are fair and knowledgable are held in high regard and their reviews are considered to have face validity. On the other hand, the committee comes to realize that a specific interviewer tends to be very picky and critical of everyone and someone who is interviewed by that person will be treated a bit differently than a candidate who got a bad review from an interviewer who is very seldom critical of an applicant and "likes everyone".
tl;dr You can't tell from your side how the interview went.