Hey pthobson, I hope I may be of help.
I ran 2 earlier this year and yes mine were definitely more developed than yours at same time. I did grow with LEDs (400w panel with 5w diodes) only used a few CFLs for low side lighting so that may be the difference.
Now that being said, in 3 gallon square pots/soil/organic nutes, one was 2.5ft w/huge single cola pheno (yielded 27g) and the other a 3ft tall massive branching bush pheno (yielded 61g!!)
I chopped the smaller one @ day 74 and the bush I took all the way until day 82...such thick, dense, sticky buds!
They LOVED heavy nutes