I gave a departmental seminar yesterday. It was a short 20 minutes presentation of my PhD thesis. I had presented two of my published works during the seminar. My research topic was to model an experimental manufacturing techniques. I have published two papers (in decent journals) and will be submitting few more.
One of my departmental senior professors privately told me that I am doing too simple research as compared to my labmates.
I know that I am an underperformer in my group, but I never thought my research to be simple. Now, I am worried how my research will be perceived by prospective future advisors and faculties. My advisor says not to heed to the professors comments and that I have done a good job. However, deep down, I feel that the professor might have a fair point. I don't know what can I do now. I have already submitted my thesis and will be defending in couple of weeks, though that professor won't be in my committee.