its quite evident that all these games are fixed. Its a shame to the spirit of the sport.
Spot fixing involves may be one or two players and it produces result of a particular ball or an over to change dramatically. It would not have effect on end result of the game.
In order to fix end result of a game, entire team or captain must be made agreed to make mistakes with out making any noise and not get caught by anti-corruption teams. It is practically very difficult to do such a thing. There are instances of match fixing in the past, my personal opinion is that these days it is practically impossible to fix an end result of a game.
We are all familiar with the fact that regardless of match is fixed or played fair, astrology indicates correct direction and result of the game.