With the Chinese involved I wouldn't be surprised if a little "design borrowing" took place.
Power plants are the same as the 139's, so there's only so much you can squeeze out of performance.
Put more weight on those donkies and you are going to end up with just a bigger and heavier underpowered 155.
Let's not forget that the 139 is certified for 15 passengers away from the land of "Supersize Me".