Inside EV tested a 2023 Taycan with the 19s (improved rear-disconnect software) at 305 miles at 70mph (they also claimed the conditions were poor and could've gone further)
2023 Porsche Taycan RWD: InsideEVs 70 MPH Range Test
Edmunds tested a 4S with 19s and got 323 miles at 70mph
Longest-Range Electric Cars | Edmunds
I have yet to see any range test of the touring getting more than 300 miles. Only one is MT which says 279. And they only put the GT at 330. Either way they are super close and you can argue they are probably both around 300 in the real world.
Point still being there is sooo much variation in the EPA test that even two cars with one an EPA rated of 200 and one at EPA range of 400 more or less get the same real-world range.