Why would anyone be doing this on their glued in laptop? If they are needing a dev machine, are you really trying to argue this is better than the mbp, thinkpads, hps or dells?
You are claiming performance figures at what 115W max turbo? What is the max consumption on the macbook 55W on CPU, 33W on GPU?
If performance matters, they should be doing the heavy lifting remotely.
Most people will be using single threaded performance, and the key metric here for this product is what is the battery life. They didn't even give a figure for that which speaks volumes.
They didn't even bring up the pen which is the main selling point of this product (i.e. ipad pro but for Windows).