He did not concede, and you'll see that in his statement. Transition happens regardless, between first and second terms.
His remark of 'facts bear him out' means that he is on the side of facts. Churchill used a similar quote, check it out. 'History will bear me out' or some such.
MAGA!
In response to a teasing remark - Samuel Hoare, the British diplomat and politician, had commented, ''Winston has written a huge book himself and called it 'The World Crisis' '' -Churchill responded: ''I have not always been wrong. History will bear me out, particularly as I shall write that history myself.''