The Battle System
There are 6 aspects of Forces of War that contribute to your chances of winning or losing a battle.
You must understand that if you put all of your attribute points into attack, buy the weapons/vehicles with the most attack, and even max out suppress and amplify, you may still be beaten when you are attacked yourself, because your defense attribute will be lacking greatly. You may also be beaten by a player who has stacked all his attribute points into defense, bought the weapons/vehicles with the highest defense and also maxed out suppress and amplify.
This is how the game works. If everyone brings up their character by stacking into attack, then everyone would win while attacking, and lose while being attacked.
Keep in mind that by adding points into both attack and defense, you will not be as strong in one as someone who allocates his or her points to mostly one or the other.
Luck only comes into play if 2 opponents are around the same strength - when the attacking player has about as much attacking power as the defensive player has defensive power. If you attack a player and you see the message "@^#&^$ you got unlucky and lost," this indicates that a player is a bit weaker than you, but managed to win because they got lucky. If a player is stronger than you and you get lucky and walk away with a win, the message will read "BOOOOOYAHHHHH, you got lucky and won."
There comes a point when a player overpowers another by so much that luck doesn't even factor in; the player will win 100% of the time.
When you go to the battle page to choose an opponent, you will notice that the only players listed are are between 85% and 130% of your level. To calculate the minimum and maximum level players you are able to battle against, simply multiply your level by 0.85 for the minimum and 1.30 for the maximum.
The only way to attack players out of this range is by opening a window with them. You can do this by having someone who is able to already attack the higher-level player bounty them, and when they are bountied the lower player must attack them. This will allow the bountied player to attack them back (retaliate). Once the bountied player has retaliated, the original two are able to attack each other for up to two days.