I would argue that while the D C Rainmaker tracking comparison video (the best we have so far) illustrates that the S2 oa is indeed "orders of magnitude" better than the Air 2's apas 3.0 oa, it does NOT illustrate that the OVERALL tracking/oa performance is that much better. For example, as has been seen in many other videos, at one point the S2 makes a strange decision as to how to get through a relatively tight spot, and gets hung up. Meanwhile the Air 2 gets through it smoothly. And at at least one other point the S2 gets "too clever" and opts to follow from the side of an avenue of trees rather than from in between them as the Air 2 does. And finally, although this has been shown better in other videos, with the S2 the subject veers close to the edge of the frame a number of times while the Air 2 keeps it more centered. The S2 is far, far better at tracking and oa at high speeds and flying backwards or sideways, obviously. But from behind at slow to medium speeds, even in a fairly obstacle-rich environment the Air 2 is arguably better overall and certainly in the same ballpark. And as seen in other videos the Air 2 and other drones are also better at tracking from beyond a certain distance.
So again I say, if tracking is your main thing, the S2 is for you. And it does other things well enough that it is a great all-around drone too. Indeed, earlier I would have said it is the best all-around drone for the money. But now with the Air 2 doing so many things so much better than the S2 (range, flight time, full manual control, night flying, etc.) for less money, while also not being that far behind the S2 in OVERALL tracking/oa performance, I don't think it's reasonable any more to claim that the S2's oa trumps everything. Based on the the evidence so far, the Air 2 is right now the best genera-purpose drone available, bang for buck. If the M2 Pro or Zoom add apas 3.0, or the S2 solves its issues with weird tracking decisions and such or does something like dramatically improve range, that could change. But for now the Air 2 is king.