Easy Wins
In order to win in season mode easily, do a move with any wrestler followed by a submission move. Then, return to the main menu by pressing Start and Quit. You will win every time.
In order to win cage matches easily, grapple your opponent. Then press Black while holding a direction on the D-pad to smash your opponent's head into the cage.
Gameplay Features
You are able to use momentum by way of a chair. To achieve this, have a "set up" chair present between you and your opponent. With your opponent on the other side, run towards the chair and press Black to gain additional momentum with the chair (some will clothesline or dropkick, depending on the character).
To ignore wrestlers that try to interfere with a match, press X repeatedly when they are on the ramp. For most wrestlers (except someone like Undertaker, who rides a motorcycle) you will not have to fight them.
Unlock Arenas
Enter season mode to easily unlock all arenas. You won't have to play as only one wrestler in season mode--you will play as the wrestler that is in the arena you want to unlock. Save and exit season mode just before or after a PPV save. Then, choose a different wrestler when you enter back in the season. Go through the match types quickly; you will not have to win in order to unlock the arenas for play in quick start or exhibition mode. Once you are finished with each PPV and arena, you will then have these arenas available.