It's really hard to be sure of what type of bananas any of us have unless they have bloomed.
They're often mixed up or even intentionally mislabeled...
I've been growing one kind for some time now, the best I can tell, it's nnamwah or dwarf nnamwah...
You always have to remember that dwarf doesn't always mean much when it comes to musa, 14' is not small! But could mean dwarf... But growing conditions really mean everything to these plants!
Many can reach 30' in the true tropics, but in subtropical areas they might only reach 10-15', and still bloom... Also the size of the mat, and the number of pups make a huge differences too.
I have a super dwarf, poquito, 3 years old in a pot and it's about 3', I put a spear pup in ground and it's already 4' plus the new 3' roller, truly tiny supposedly do the same thing...
As long as you like the plant, who cares what it's called?