Nice comparison, Maurillio, but I think it is still too early to draw conclusions, as both your plant and the original are rather young ones. Most of my M. haageana / albilanata seedlings have looked pretty simlar to M. formosa seedlings at 1-2 yrs.
I remember being told once that the appearnce of seedlings gave insight into the evolutionary links between species. Now according to the classifications that we work with, M. albilanata and M. formosa are in different groups. However, according to DNA analysis, these two groups do have a common ancestor, which is more recent than (say) the separation of species such as M. elongata.
But I think we must wait.