I think it is generally agreed that you don’t have to have either the human brain’s processing power or it’s inputs to achieve powerful AI. Instead, there are advantages that AI has (i.e. memory, pre-structure, exactitude, focus, duplication, analytical, lack of extraneous processes, etc) that will inevitably help it exceed human capability in many areas.
Predictably, in the medium term we can expect a human/AI team, or an augmented human, to be the most powerful and meet with the most success. After all, we are looking to build tools that will help us build better tools. The Law of Accelerating Returns. If a new computer language, or a new computer processor, helps us get better results, it is just a means to an end of creating even better AI architecture, so eventually we can reach the Singularity.