sativa plants need more space to stretch out and also they take longer to finish.
I had just one sativa plant outdoors last year, and it was weeks behind the others, did not even start to flower, at the end of october.
I use CFLs since late 2009.
Mounting the lamps to the sides, not to the top, increases branching, while the top can be cut off after a while.
I have excellent results with lowryders, which I am currently re-vegging, so maybe they are not true autoflowering lowryders anymore, since they are from 2nd generation seeds.
However, they stay very compact, branch out a lot and they grow very fast, 2x to 3x that of my current main plant (which is kind of an Orange Bud/Lebanese Red mix).
What I experienced is that 150w or 200w CFL will cause problems after a while, lack of light, stunted grow and spidermites, so I installed more CFLs recently, about 400w now.
I had some Early Girl plants last year, they remained small, and also two indoors plants (CFL) remained small, did not branch, and they also did not revegetate. I think it's their genetics.
I think you could grow any strain under CFL except pure sativas, as they need far more space. If you grow a regular strain expect it to fill out at least 1m x 1m x 1m, if you let it branch freely, and if the container is large enough. Actually I used the space under the branches to grow additional, smaller plants.