If you take the 3.1 which is quoted with rollout, it equates to about 2.8. So if comparing apples to apples specs, they need to be measure the same way. When they quote the Plaid specs, MYP, M3P, etc. they always quote the 0-60 times without rollout for the performance models. So subtract about .2-.3 seconds from the non performance cars time or add the same to the performance car times to be at least have a more relevant comparison.
The last M3P I tested ran 3.38 (with rollout) according to Dragy vs Tesla's claimed 3.1 without rollout. At the time Dragy called it something like the 3.13 without rollout. That was with 95% SoC and fresh off the Supercharger on a warm day and pretty sure batteries were up to temp.