The Gen 4 cross-gens varied a LOT in BST gain. Yanma-Yanmega was a 125-point gain for example, and Dusclops-Dusknoir was 70. They're more commonly around the 120ish mark, though. That being said, I don't think they treat cross-gen Pokemon any differently statwise to any other Pokemon. If previous cross-gens are an indicator, though, it'll probably hit around 520ish BST, since Farfetch'd's Gen 7 BST is pretty close to Nosepass's, and Probopass is 525.
Regardless, there's too many unknowns to know for sure either way. Aside from Farfetch'd's movepool (which does include a few good moves like Leaf Blade and First Impression that are fairly unique), we have no real indicators as to how good Sirfetch'd could be. It's also worth pointing out that we don't know Sirfetch'd's Hidden Ability, and Farfetch'd gets Defiant, which is a very good ability.
True that. I think Misdreavus got a boost as low as +60 BST. I'm hoping that Sirfetch'd gets bumped up to 500 BST or higher. I'm also thinking that a Speed drop is quite possible (given how slow everything was in gen 7), so they could maybe re-purpose that into Attack / Defence.
My speculation is that Sirfetch'd is probably going to be fine for in-game use. In competitive singles (which is all I really care about TBH) it will have a lot of competition from the likes of Conkeldurr as a slow wall breaker. If we assume it gets base 130 Attack (seems reasonable) and Cross Chop, it could do a lot of damage with Stick. I got bored so I decided to run some hypothetical calcs for fun:
252+ Atk Machamp Cross Chop vs. 252 HP / 252+ Def Skarmory on a critical hit: 153-181 (45.8 - 54.1%) -- guaranteed 2HKO after Stealth Rock
252+ Atk Machamp Cross Chop vs. 248 HP / 0 Def Magearna on a critical hit: 240-283 (66.1 - 77.9%) -- guaranteed 2HKO after Stealth Rock
252+ Atk Machamp Cross Chop vs. 252 HP / 24 Def Ferrothorn on a critical hit: 420-494 (119.3 - 140.3%) -- guaranteed OHKO
-1 252+ Atk Machamp Leaf Blade vs. 0 HP / 4 Def Landorus-Therian on a critical hit: 176-208 (55.1 - 65.2%) -- guaranteed 2HKO after Stealth Rock
252+ Atk Machamp Leaf Blade vs. 244 HP / 0 Def Gliscor on a critical hit: 135-159 (38.3 - 45.1%) -- guaranteed 3HKO after Stealth Rock and Poison Heal
252+ Atk Machamp Leaf Blade vs. 252 HP / 200+ Def Rotom-Wash on a critical hit: 234-276 (76.9 - 90.7%) -- 25% chance to OHKO after Stealth Rock and Leftovers recovery
252+ Atk Machamp Night Slash vs. 252 HP / 4 Def Tornadus-Therian on a critical hit: 151-178 (41.7 - 49.1%) -- guaranteed 2HKO after Stealth Rock
252+ Atk Machamp Night Slash vs. 0 HP / 0 Def Volcarona on a critical hit: 179-211 (57.5 - 67.8%) -- guaranteed OHKO after Stealth Rock
252+ Atk Machamp Night Slash vs. 252 HP / 212+ Def Reuniclus on a critical hit: 228-270 (53.7 - 63.6%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Machamp First Impression vs. 0 HP / 4 Def Alakazam-Mega: 306-360 (121.9 - 143.4%) -- guaranteed OHKO
252+ Atk Machamp First Impression vs. 0 HP / 4 Def Greninja-Ash: 298-352 (104.5 - 123.5%) -- guaranteed OHKO
Not bad. First Impression in particular seems nice, I didn't realise how badly OU wanted Bug priority. Gliscor can't Roost on you so Sirfetch'd would win. And if it keeps Defiant, then Lando-T would obviously be murdered.
Someone finally mentioned it up: How could Normal/Flying become a pure Fihhting? It even has a clearly visible wings, although it uses 'em as so-called “hands” to hold his Sword and Shield
Ah I kind of like this to be honest, we don't often get evolutions which completely switch up the typing. In this context it makes sense: It becomes a fighter whose gear is far too heavy to fly with (it's now like +200 lbs but still the same height). I didn't like the design too much originally, but I think it's growing on me. It's a neat direction to take Farfetch'd.
