How powerful is the blade of olympus ?

1- the war between the titans and the olympians lasted for centuries, but zeus was capable of defeating all the titans with one blow from the blade of olympus

2- it was capable of killing kratos with one blow, kratos is the same guy who :

• tanked getting stabbed in the upper part of the right side with gungnir, while thor died to a similar stab.

• can withstand the cold of helheim while odin cannot, this also further supported by how odin gave atreus, thrud and heimdall a protection spell to protect them from the cold of helheim, which implies odin can't survive without using magic.

• didn't even flinch when an enraged and powered up thor hit him in the face with mjonir

3- it is the only weapon that could somewhat damage, zeus when kratos used it against him atop the summit of sacrifice, and even almost killed him albeit at this point zeus was weakened because the flame of olympus which is the source of his strength was destroyed.

It is the most powerful weapon in the series, I don't think odin would have gained the upper hand on kratos if he had the blade of olympus, also defeating thor and odin would be much easier with it.

Frankly I don't think odin, thor, tyr or even kratos could survive a direct stab from the blade of olympus.