See again this is a misunderstanding about what the EP system is. The version BoB has been running is the real EP system, the version he ran against the falcons is the real EP system, the version BB ran when he was completely dependent on Brady is the real EP system as is the version now that leans much more of the defense. There is no "Real EP system" its like saying what is a real house. Some maybe 200 sq ft, some maybe 2000 sq ft, some may have 5 bathrooms, some only 1. Some are made of wood, some brick and some out of clay. They are all real houses though they are just different to fit the person that lives there either due to preference, budget or location.
The EP system, at least the current form of it, is one of the most fluid systems out there. Its why so many teams with some many different strengths and weaknesses run it. Because its a jack-of-all-trades systems.