BMC - why the long trail?

[pff]

I have a BMC roadmachine and in terms of chainstay length and front-center it's pretty much halfway in between both my racing-geo bike (a cervelo) and my gravel bike. The stack/reach on all 3 are essentially identical.

I like a lot of stuff about the BMC but I've never liked the way it carves turns, or fails to. I have to start turning much earlier and it never wants to hold its line --- very easy to oversteer (due to high wheel flop?).

Both the gravel bike (when running road tires) and the racy bike handle subjectively "better" on descents. The racy geometry in particular goes where I want it to on a moment's notice. But even the gravel bike which seems similar in a lot of measurements is more confident in descending.

I've attempted to understand where this subjective feeling comes from. This has led me to reading about trail, rake and flop. It appears that not just the endurance BMC but all BMC road bikes (team machine SLR, new team machine R, road machine...) have outlandishly high trail and therefore flop. The BMC site lists trail at 63mm but by my calculations they are using a 25mm tire for this figure, whereas most of us are using closer to 30mm these days which puts trail at 65mm.

BMC seems pretty far from the industry standard in this regard but I've never heard this mentioned by any bike reviewers or other blokes on BMCs. What gives?

3 bikes in question for reference