Only if the body is duplicated too. If I could just make my brain bigger, I don't think my odds would improve much. Quite to the contrary. An AI with higher dependency on compute power seems more vulnerable.
The duplication is not about being becoming smarter but increasing the amount of concurrent tasks that can be performed.
Current AIs are not limited by the amount of concurrent tasks they can perform, compared to not having bodies and being prone to making things up.