Seth re-games the election. The conclusion:
A 269 to 269 tie would have come about in those circumstances because of the 2 electoral vote bonus awarded to each state. Trump carried 30 states (each bringing a bump of 2 electoral votes), but Clinton only carried 20 states and the District of Columbia. It appears that Republicans go into presidential elections with about a 10 state or 20 electoral vote bonus.
Worth reading in full.