Myzozoa
to find better ways to say what nobody says
Of course it has a bearing, you can only use one Terrakion on a team. So if CB and SD are being used to the exclusion of Scarf, it indicates something about the strength and utility of those sets.The popularity of Choice Band Terrakion and SD Terrakion has very little bearing on the viability of Scarf Terrakion. Saying "it does not need more speed at base 108" just makes me question if you even know what Scarf Terrakion is meant to do lol
You don't get to reject my argument just by saying "LOL myzozoa, ur so one dimensional with your volt-turn shenanigans." Good pokemon have a lot of utility, they give you, the player, more options and more ways to win. If your Scarf pokemon doesn't have Pursuit, U-Turn, or Trick not only is it a sitting duck against stall teams, balanced and offensive teams w/ bulk are just going to laugh at your attempts to revenge kill as they switch out to something that resists the unboosted hit. If you had U-turn, Trick, or Pursuit, you could break down their team rather than losing momentum and giving away advantages.Terrakion has multiple advantages over Landorus. ExtremeSpeed resistance means its a better answer to DDnite. Fire-type resistance means its better vs Volcarona. The extra speed means it can outspeed Modest Venusaur (admittedly not as relevant anymore), Stoutland, and Scarf Garchomp. It has better coverage with its STABs: Stone Edge and Close Combat are both harder to set-up on than Hidden Power [Ice], which Landorus often relies on for much of its revenge-killing. The loss of U-Turn does suck, but not everyone is using Deoxys-D offense / volt-turn, myzozoa!
Terrakion outruns Scarf chomp? Okay dude, it outruns another bad scarfer (and it can't ko it), wtf is your point? Venusaur, cool dude, you can't even come close to a KO. I would say that Landorus is fine against Volcarona, but if it isn't, in the sun Terrakion is also awful against it, same thing goes in the rain against Hurricane Volc. Lastly, since Terrakion is never switching into Dragonite, you still have to lure outrages and then get in and Rockslide, which is exactly what Landorus has to do too (only with hp ice).
I'll tell you a secret, don't tell anyone else though: I wouldn't use Scarf Terrakion or Scarf Landorus on a Volt-turn team. This is because Volt-turn doesn't need any revenge killers other than Scizor.