I was bored and took a look at Aggron's RU analysis, and I noticed that Low Kick was not even on the main moveset (the CB set), being neglected to AC. It says in the analysis that Earthquake "smites opposing Aggrons and Steelix" but Low Kick does much more to those specific targets. At least Low Kick has a chance to 2HKO Steelix while Earthquake has no chance of doing that, and it can actually 2HKO Steelix if you get SR and a layer of Spikes up, while with the same amount of hazards, Earthquake only has a 12.5% chance to 2HKO. Someone must have really loved EdgeQuake coverage or something like that, but I think Low Kick should be slashed over Earthquake because the targets of Earthquake are hit much harder with Low Kick.