Festool do not make their own Carbide, nor do they personally braze it on,
Festool has their blade made by some manufacture, so the OEM branded ones may be the same as the magical "System blade"
It is offending our intellect to suggest that they are better with no basis "of why/how they could be better", having been presented.
Whether that does something for harmonics or not would be interesting to know.
But I suspect that Leitz uses Leitz carbide and Leitz metal, so it is a Leitz blade at its heart/DNA.
