The concept of delivery is there, as other people have said, actually there is no real competition. Understandable that the time to execute the game is to be taken into account, however, all in all the game works for what it is. I am sure that with the next JAMs you will be able to adapt well after this experience and bring out a bomb of a game! I remember the first time I did a VR Jam, I was completely panicking because I had to execute the game in 3 days, however, what you learn and the experience that this event allows you to accumulate (at least for me) only increases the desire to do more!