Same engines...derated FADECs for takeoff thrust, which is easily remedied with T/O RSV. There's a reason the 140s were sent to places like Key West - because you can fill up the airplane as opposed to the 145s, which could only carry about 35 pax max because of performance limits. 135s had the same FADECs (see: 7000 FPM climbs when you were empty). If anything, the 135s and 140s were OVERpowered, which is why the FADECs were derated.