Okay, so there's a Pokemon who I think is a little bit high up rank wise
Talonflame
Now, before you rant at me saying that Talonflame is the bringer of a brand new play style and that I shouldn't dare question it's ranking, let me explain.
1. It's typing
I honestly think that Fire/Flying is one of the worst typings in the entire game. 4x weak to Rock, weak to Electric and lose the resilience to Ice for what? Immunity to Ground? A 4x resist to Grass? I honestly think that the typing is overrated as hell, and is just bad. But what does this have to do with its viability? Well considering you pretty much HAVE to have a Rapid Spinner/Defogger in order to make sure it does something isn't exactly ideal. And while I know that this detracts very little from its viability (Look at Charizard X) it's still something I have to point out.
2. It's move pool
It's decent, you got your powerhouse moves like Brave Bird and Flare Blitz, set up moves like Swords Dance and Bulk Up, and even some support moves like Tailwind and Will-OWisp. But mostly it's the same set of
Flare Blitz
Brave Bird
U-Turn
Filler (usually Roost)
With a Choice Bamd. It's pretty predictible. Of course it can have Swords Dance in the Filler section and hold a Life Orb, but usually people stick to Choice Band. Which brings me to my next point:
3. It's pretty outclassed (Let me explain!)
Now, you might be thinking to yourself, "How the fuck is Talonflame outclassed? It's the best flying type in OU!" Easy, Staraptor does the basic Talonflame set BETTER.
Now before you rant at me saying "That's just your misinformed opinion! Talonflame is better in every way!" here's the thing, AI have thought of countless situations of how Talonflame could outclass Raptor, and mostly, it fails to deliver. Now I'm not saying Staraptor is 10x better than Flame, I'm saying that in most situations, Staraptor is going to do the same thing as Talonflame, and it's going to do it better. You might be saying "But how does it if Raptor needs a Scarf and Flame can run a Choice Band?"
Easy:
252 Atk Choice Band Talonflame Brave Bird vs. 252 HP / 4 Def Mew: 213-252 (52.7 - 62.3%) -- 99.6% chance to 2HKO after Leftovers recovery
252 Atk Reckless Staraptor Brave Bird vs. 252 HP / 4 Def Mew: 222-262 (54.9 - 64.8%) -- guaranteed 2HKO after Leftovers recovery
Yeah, whole it doesn't make THAT much of a difference, it still proves my point on a pure damage point, Raptor is better
Of course there are 2 situations where Talonflame does better against Staraptor:
Vs Aegislash
Vs Azumarill
Aegislash walls Raptor to hell and back, while Talonflame has a decent shot at killing it with the right prediction
Azumarill however...
252 Atk Choice Band Talonflame Brave Bird vs. 52 HP / 0 Def Azumarill: 258-304 (72.8 - 85.8%) -- guaranteed 2HKO
Okay so imagine the situation. You just switched your Talonflame into a BellyJet Azumarill (Yes I know they don't always run 52HP) and you predicted the Belly Drum. Since Azu forced the switch it'll be at 75% HP (Sitrus Berry) so you have a very high chance of OHKOing it with Brave Bird (with rocks? 100% chance)
Of course Staraptor can't outspeed Azumarills priority and would die
+6 252+ Atk Huge Power Azumarill Aqua Jet vs. 4 HP / 0 Def Staraptor: 424-501 (135.8 - 160.5%) -- guaranteed OHKO
(To be fair, Raptor guarantees the KO at 75%)
But those are the only two examples I could think of where Talonflame outdoes Raptor. Now I'm not saying that they need to swap places or anything, but my point IS that if a Pokemon in A+ is being outclassed in a good number of ways by a Pokemon in B-, something is up with their rankings! (Or is Gale Wings THAT good?)
TL:DR (Wouldn't blame you if you didn't XD) Talonlfame is ranked a little too high IMHO and needs to move down to A/A-
(I have more points like how if Charizard is the most used mon, people are adapting to it and thus adapting to Talonflame simultaneously, but these are the main points I wanted to bring up)
I have 4 points to make.
A) You are comparing their power. Talonflame has never been used for how hard it hits. Base 81 Attack is pathetic. However, it hits hard *enough*. Talonflame is used for one reason only: Gale Wings. The ability to revenge kill nearly anything, regardless of speed boosts or Choice Scarf. Talon's Brave Bird isn't a super strong attack, but it is the strongest priority attack in OU. Scarf Raptor is fast, but it isn't priority. Priority also means it is very difficult to revenge in return, should it be a sweeper set with SD/Bulk Up- no scarfer can tame the Talon.
B) Even with the power argument, the Raptor barely outhits Talonflame. How does this mean Raptor outdoes Talon? With Talon's priority, ability to set up, and more meaningful secondary STAB, it has tons over Staraptor.
EDIT: Johnathon's calc is also to be considered. Adamant Talon (most of them) hits harder then Raptor anyway. So the power argument isn't so significant.
C) Movepool is only a problem if a pokemon cannot do as well as it could, and really needs a move it doesn't have to reach it's potential. Talonflame has everything it needs to do well- it can be Choiced, SD, even bulky boost and support sets. Brave Bird, Flare Blitz, Roost, SD, Bulk Up, U-Turn, Tailwind, hell, even Taunt in some cases. A huge movepool is certainly better then a small one, but in this case I can't see it as a huge problem. Let's not forget, Staraptor's movepool isn't much to speak of either- Brave Bird, Double Edge, Close Combat, U-Turn, Quick Attack. That's it. Staraptor is, if anything, even worse then Talon in the movepool sector- it has exactly one type of set it can do, Wallbreaker, while Talon can do multiple.
D) Fire/Flying really isn't that bad. It has 6 resistances- to Fire, Bug, Grass, Fairy, Ground, and Fighting. Weaknesses always suck but in this case, I can't see it being a huge concern- only Rock is in any way crippling, both because of SR and Rock coverage being common on physical attackers. But not enough to invalidate the whole typing, in my opinion.
Basically, you argument is "Raptor hits marginally harder than Talonflame" (EDIT: Raptor doesn't hit harder, Adamant Talon does), "it's movepool sucks" and, as far as I can tell, nothing else. Perhaps I missed it, but you neglected to mention (or, if you did, failed to acknowledge the meaningfulness of) any of Talon's other perks- Priority, Setup, STAB. Gale Wings really is just that good. In this lurker's opinion,
Talonflame Stays A+.
TL;DR: Priority, More Power, Can run multiple sets.
Apologies for any spelling errors- we all know the evil that is phones.