sigh
I thought I made it perfectly clear, apparently not. Still, if people aren't in agreement with what should go there...
The Related Moves section is designed to house all of
equivalents,
variants, and
alternatives.
Equivalents are those moves that are exactly the same save for a typing change. Examples are Seed Bomb and Strength.
Variants are those moves that have similar mechanics but have slightly different properties anywhere, for example in effect, Base Power, or accuracy. Examples include Flamethrower and Thunderbolt, or maybe Seed Bomb and Iron Head. These should be kept quite strict, however.
Alternatives are those moves that, were the Pokemon to happen to have both of them, then they would be able to consider one over the other for competitive reasons. This does not include "physical variants" - it ought to be assumed that said Pokemon is using a physical/special move for a reason. This also should not include "legendary exclusives". Examples include Seed Bomb and Leaf Blade. You also ought to include Power Whip and Bullet Seed in here.
So, for a move such as Lava Plume:
<h2>Related Moves</h2>
<p>Scald is a Water-type equivalent.</p>
<p>Discharge is an Electric-type variant with a 30% chance to paralyze the target.</p>
<p>Poison Jab is a physical Poison-type variant with a 30% chance to poison the target.</p>
<p>Flamethrower is a more powerful option, with only a 10% chance to burn the target.</p>
<p>Fire Blast is a much more powerful but less accurate option, with only a 10% chance to burn the target.</p>
(Yeah I know that's not what's actually on-site, but)
Most of the Related Moves sections on-site don't conform to this, however. If people want to change the way this section is done (and I will be honest, the equivalents and variants are rather useless information) then that's fine, as most of the entries on-site will need changing anyway.
That was the intention for the section, anyway. If people want it changed badly, then so be it. It's not one of my priorities at the moment, though.