This might be due to the following reasons:
1. The Volume scaling of the Subscription Strategy is different. For example, A is Autoscale, B is Fixed.
2. The Ratio multiplier of the Subscription Strategy is different. For example, A and B are both set to Autoscale, the Ratio multiplier of A is 1, and the Ratio multiplier of B is 2, so B will place twice the amount of the Provider's trades.
3. Different strategies are selected under the Provider filters, such as the maximum and minimum lot size, copying only buy or sell orders, etc.