The whole point of multiple rides isn't about how fast you are at a given power output. But how fast you are on a bike. Does a bike allow you/encourage you to ride harder? Does it make no difference in the real world?

One often-repeated argument on these forums is that, while a lighter/more aero/newer bike may be faster in theory, you will not be able to see that in the real world. Hypno Toad's data provides a good glimpse into that. You can see that his fatbike is significantly slower than his road bikes on that segment. Whether it is because of weight, rolling resistance, aero or simply because he doesn't feel like pushing it when he is on the Pugs doesn't matter.