Lab 6.3 is an important part of your final paper (Paper III). Please take some time and think through your answer very carefully. You definitely want to review the analyses of our t-tests. It is not true that an experiential learning manipulation (PSY 340W) is simply better than a video-teaching approach (PSY 309W) in all aspects. You need to think through the mean-values of each condition, think through the p-values (significance), and then evaluate the overall strategy carefully. To say that the experiential learning from PSY 340W was simply better would be ignoring important findings from your t-test analyses.
You also need to follow the format set for you from the relevant lecture with Lab 6.3. The discussion section is meant to be evaluative, but your evaluations need to be solely based on evidence (your Results section plus prior research findings) and not your personal opinion.
Your discussion section should be at least one-page in length (at least 500 words). If your discussion section is too short, it probably means that you have not considered all the nuances of your data carefully. I would strongly encourage you to craft your answer for this lab carefully, because it accounts for a large portion of Paper III.