The Champions League final is a completely different kind of match where there's no room for mistakes. All those previous matches had return legs, where teams could "fix" things if something didn’t go well. Here, we’ll actually see who has more experience and who has the better tactics. But yes both teams have a crazy attacks,it will be very interesting to watch.
Mentality is very much needed in a high tension match and it will greatly affect the performance issued by a team and in the Champions League final match of course it will be different from other matches, the pressure on the field felt by the players will be very different but for Inter Milan and PSG players I think they have enough experience for all of that.