Quote from PuffyGums:
You should get some facts straight. IB is not trading against the customer flow in futures. In futures, it is against the regulations to trade off the exchange (unlike stocks where that is OK).
Futures orders can only be filled through the matching engines of the varioius exchanges or on the floor. For any broker to bucket an order and not post it to the floor or to the matching engine is a severe violation and is certainly not happening.
You are taking a model of stock trading and incorrectly mapping it onto what you think is happening with futures.