Ademisk
Smash Champion
Are we sure it's fixed? Knockback is determined by in an A+Bx form, where x is the damage, A is the constant representing initial knockback, and B is the constant representing the growth rate. Melee Ness's forward throw had a high A, and a low B, but the B was not zero. Yoshi's down tilt had a largish A and it's B was zero, so it was fixed.
What I'm trying to say is that it would be hard to determine whether it's fixed knockback without sufficient testing. So if you have proof of this claim, or have tested it yourself, or can cite someone who has tested it, please feel free to back it up.
No, I meant it has a large A and small B