The biggest advantage of the 2016/2017 MBP is how the TB3 lanes are connected to the CPU. They are connected directly to the CPU instead of going through a TB3 chip and then to the CPU. This removes as much of a bottleneck as possible for connecting nvme drives to eGPU's to the laptop. The only other laptop on the market that does the same TB3 to CPU connection is the Alienware with its proprietary connection. Every other laptop that advertises TB3 ports are passing through some chip before hitting the CPU.