I've been playing quite a few online matches of Ultimate Ninja Storm 2 and have come across quite a few people who use a turbo controller to gain an unfair advantage.
Seeing how blocking just before an attack hits allows you to perform a substitution jutsu, negating all damage and placing you behind your attacker, people that use a turbo controller to spam the guard button are nigh-impossible to attack, as any attack in the game can be avoided in this manner.
This also allows them to land rather potent attacks while their opponent is still recovering from the sudden reversal, which in turn gives them breathing room to recharge their chakra (which is necessary to perform substitution jutsu).
Ranged characters may be a good counter to this technique, as substitution jutsu does not place you behind the attacker if he is not within melee range, but it is impossible to spot a turbo-controller user at the character selection stage.
Is there any tactic I can use to punish people who rely on turbo blocking?