Ah! I was looking at that bottom pic...taken from a higher angle...it's hard to tell height.
I'm going through this right now. I'm trying to figure out the sweet spot (height wise) for my light....My current plants are on the small side...I'm trying to figure out if its something I did (probably) or not. I figure if both of those lights aren't causing your plants to be tiny, my one light shouldn't affect mine as much as I thought.
Although...If this is the size my plants are going to be (weather its the light or not) I don't have a problem adding more plants.....