Complex sentence: The ambiguity in the articles has led many to believe that the A320neo is, in fact, a new aircraft and that orders for the New Engine Option equate to orders for new Airbus aircraft.
Split into simpler sentences: The ambiguity in the articles has led many to believe that the A320neo is, in fact, a new aircraft. The articles imply that orders for the New Engine Option equate to orders for new Airbus aircraft.