In general, I think photoperiods are better because you can decide how long to veg. I think you didn't get more veg growth on this plant because of your container size. Once autofowers hit the side of the container, they are like "shit, I better start flowering now, or else I may not have any offspring" Also that's not a terrible plant, and for the size of your tent, you should get a decent yield and the quality should be really good if you keep up the good work. People say not to transplant autos, but it is already flowering. If you are careful you could pot it up to something maybe double the size and increase your yield that way beings you can't veg it anymore. If you had a bigger pot to start with I think you may have been able to veg your plant a little longer. Everything Kenn0rphan is saying is good information as well.