Nerik,
I don't think they mean head on. Logically the 727 would be closing from behind. There is no commercial airliner out there that can outrun a 727 that has the throttles wide open from behind.
ATC Watcher,
This particular airplane uses the entire fuselage to carry fuel. Now I don't know if that is more than a 767, but certainly the fuselage of a 727 is much larger than a 767s wing box and wings???
Maybe the Saudi should keep those missles they found near the airport handy and manned. They may need to shoot this thing down.