My only "harder" win, was from the last pachinko contest, it went like this:
On 1st day someone got around 500.000 points.
On 2nd day I follow him and get 400.00 points.
On the 3rd and final day I woke to find out that the guy pushed up to 1.117.000 points, so I went ahead and pushed to 2.000.000, the guy never incresed his points after that, maybe he realised that he couldn't beat me, only had a net loss of about 5m and still had 7m.

the give exp to girls one its rare to fight over because I am usually scummy and just level them on the last minute, and if I think that the points for 1st place are too high, I just go for 4th place.