However, this does not equate to Landorus getting a free sweep. Many things could happen between Latios getting Pursuited and you getting that sweep which could prevent the sweep from happening at all. You're acting like Latios dies, the game is finished, Landorus has free rein. It doesn't. Therefore, getting rid of Latios via an external method doesn't help the case at all. Easiest case is you send in Tyranitar, Pursuit the Latios, then in comes an opposing SubSD Terrakion and wrecks your ass. If you're going to bring team support into the equation, then I may as well bring team support for Latios too. This is why talking about team support just complicates matters. EDIT: I guess I could also address your "Pursuit Latios, it's gone, but Landorus can keep coming back". I won't contest that because it's true, but if I sack my Heatran or something like that your Landorus, I'm saccing it for a good reason. If I make a team where 3 or 4 Pokemon utterly lose to Landorus and risk it setting up on, then I've made a bad team. If I sac Heatran, the most likely reason is that I can make up for that loss later, not as a last ditch attempt to stop Landorus from setting up. You can kill Heatran and get a 1-0 advantage, but you're unlikely to kill anything else with Landorus, or set up on anything else later in the match.