Composition matters a lot too (rubble pile vs monolith). Many things affect whether it will be a bolide, and at what altitude. But size is the most important f

Composition matters a lot too (rubble pile vs monolith). Many things affect whether it will be a bolide, and at what altitude. But size is the most important feature because it is unbounded. You can’t be more direct than a perpendicular impact, but asteroids can always be bigger. And a 10km rock at pretty much any angle is much more energetic than a 10m rock, no matter what you do.