Hello Luis,
You or me we have mixed things up at some point... I saw other photos of the jabos I gave you 2 years ago that you posted on another thread and there is no doubt for me:
The one I gave you labelled as "Common Jabo" is actually a variety of Myrciaria jaboticaba... same species as "Sabará" but apparently there are many other varieties other then "Sabará"
The one with those nice red new leaves (discussed in this thread) is the M. trunciflora (Jaboticaba-de-cabinho)... the biggest one I have (sister of yours) is now more that 2 meters high and has the same new red leaves... good news is that this species should be one of the cold hardiest of all Jabos ... I left one outside in a pot during last winter and it resisted -5ºC at my place with no problems (only lost some leaves that sprouted immediately at spring)