Mae Trafnidiaeth Cymru wedi edrych ar ba mor gadarn yw'r cynigwyr sy'n weddill, a'u gallu technegol, ac maent yn hyderus eu bod  yn gallu cynnig ateb o safon uchel fydd yn ein galluogi i drawsnewid gwasanaethau rheilffyrdd ledled Cymru.
Transport for Wales has analysed the robustness and technical capability of the remaining bidders and are confident that they are both capable of providing a high quality solution that will enable us to transform rail services right across Wales.