Gerhard Berger from McLaren scored Pole Position to Japanese GP, but hes not the most important driver in line-up. Ayrton Senna (P2 on the grid) and Nigel Mansell (P3 on the grid) still fighting to 1991 World Championship. Senna can do it at home race track engines manufacter for McLaren, so its more pressure for McLaren and For Honda.
I invite you to watch.