Well, because they asked to be...
Australia vs Russia is an unrealistic thing by itself, they would never play cricket against each other, there would be no point.
When Russia do play cricket it would be against fairly similar sides, ICC affiliates that they would have a slight chance of winning against. The matches might not be as skilled, but that would be on both sides.
If the game will preempt what the player considers fun or worthwhile and narrow the possibility of what will happen to ensure that result there is no point in the game.
if I choose to set up as Aus v Russia it's unlikely to be because I'm looking to bowl 130+ overs and chase 400 in the second innings.
There game should be able to model faithfully the matrix of variables between team a's ability, team b's ability, game difficulty and player input - that's the point of the game.
I appreciate its more complicated than
@cricket_online has it because a 1 helmet batsman would/should do better against a 1 or 2 helmet bowler than against a 4 or 5.
In this instance, as the Aus bowler, his base ability and the game difficulty should give you details regarding the control input difficulty/sensitivity for accuracy/pace/movement etc. that should then work in conjunction with the batsman's ability in order to work out the level of accuracy/pace/movement required to beat the batsman, and the batsman's timing windows. This would mean with Aus v Russia you would get dismissals bowling less well than you would bowling v India.
If you're bowling as Russia (or any lower rated bowler/team) it should be difficult to land the ball in the same spot time after time - this is basic, anyone who watched England in the 90s knows bad bowlers spray it about - and the match difficulty/bowler's ability will control exactly how difficult it is. Again it should be plotted against the batsman's ability to determine the batsman's timing windows, or exactly how much accuracy/pace/movement can defeat that batsman: always leaving the possibility for the magic ball that can beat anyone.
It must be demonstrably easier/harder to play with/against certain teams, and a game that can't model that is getting it wrong. A developer/designer who intentionally refuses to model that is in the wrong game.