I have grown LR2 extensively and i now have some of those exact beans your looking at going myself. My ML are about 6 weeks and they do in fact stay smaller then the LR2, However i doubt there will be a difference in the total number of nodes and budsites, the ML just seems to take the compact thing to extremes. Like i said i am only 6 weeks in but so far resin production doesn't appear to be anything more then that i am used to seeing on the LR2 but they do appear to have a denser bud structure and i'm hoping to see a visit from the frosted fairy here soon.

If your growing requirments mandate short plants and you wanna do autos the masterlow seems a good choice to me. Hell i got the space to go big and i still wanna grow em.