It is possible that Tesla is actually lying about the output. It’s a 5000lbs cat that does the 1/4 in 9.2sec, it takes a lot of power to do that.I was thinking long the same lines--that the graph is the electrical power being delivered and not the mechanical power being created. Let me look at the other values and see if they offer some context.
Just for fun I looked at estimate Hp from your 1/4mile. Have a look. If true it would explain the extraordinary speed of the Plaid besides the new motor that has flat power from 80mph to 200mph.