Originally Posted by Fat reaverz
The only explanation I can come up with is that unlike Bronzor/Bronzong, other Pokemon with Levitate have only that as their ability which means that their floating is an inherent part of their design.
Red/Blue: Uses antigravity to stay suspended
Yellow: It is born with the ability to defy gravity
. It floats
in air on powerful electromagnetic waves.
Stadium: It floats
using anti-gravity and discharges electricity from two side-mounted units.
Silver: The units at the sides of its body generate anti-gravity energy to keep it aloft in the air
Sapphire: Magnemite floats in the air
by emitting electromagnetic waves from the units at its sides. These waves block gravity. This Pokémon becomes incapable of flight if its internal electrical supply is depleted.
FireRed: It moves while constantly hovering
LeafGreen: Uses antigravity to stay suspended
Diamond/Pearl: The units at its sides generate electromagnetic waves that keep it airborne.
SoulSilver: The units at the sides of its body generate antigravity energy to keep it aloft in the air
Black 2/White 2: The electromagnetic waves emitted by the units at the sides of its head expel antigravity, which allows it to float
Magnezone really needs levitate. Or at least Magnemite/Magneton do. They levitated before levitate was an ability.
Sure, it'd take out their 4x ground weakness, but that's what Mold Breaker, Gravity, Smackdown, Teravolt, and whatnot are for. Or you could hit it with a fire or fighting move.