A few comments to be made here. I was perfectly willing to let this discussion drop, but you felt you had to make a longwinded and, in my opinion, rude retort. Marquis of Blaze already made a decently compelling counter argument, and you apparently had to say something. Fine. A couple things to note, the first and foremost being that Mega Lopunny has Fake out nearly 100% of the time, which does in fact allow it to revenge kill Latios. Furthermore, You say that you obviously wouldn't Draco with Latios when he has Some setup sweeper in the back. So, you are essentially saying that if they have a setup sweeper, you cannot safely fire off a draco meteor, meaning that you essentially cannot use Latios's most powerful nuke in fear of that pokemon setting up. If you disagree with my points made above, fine. I can see that. but there is something that you missed.
You mention The Teammates of Latios far too many times for an S rank nomination.
The entire point of an S rank pokemon is one that requires Very Little team support. Granted, they all require some, but Manaphy can waste stall teams with very little additional wallbreaking needed, and Megazard X can just crush everything besides Slowbro and kind of lando-T, and the former can be BSed past with ThunderPunch, while the latter lacks reliable recovery. Tyranitar, Bisharp, Gross and its mega, Weavile, Scarfed Jirachi and Scarfed Garchomp, Hoopa-U, Mlop, Unaware Clefable, Azuamarril, Thunderus, Klefki, Twave Ferro, Scizor and its mega, Twave Chansey, Specially defensive+Whirlwind skarm, Heatran, Scarfed Kyurem-B, Mega Diance, Mamoswine, AV Torn-T, Mega Gardevior, Mega Altaria, Twave Cress, Choice Scarf lando-t, CB Talonflame, Sylveon, CM MegaBro, and essentially any pokemon that can take a hit and Twave back.
Yes, I know it can get past some of these with the appropriate coverage moves, but you then sacrifice yourself to a new slew of threats. And you say "Cripple" with Twave, but it still essentially results in Latios being defeated. Futhermore, a ton of this stuff here laughs at the most common set- The defog one. And even stuff Latios "beats" 1v1 such as mega medicham, it's still taking about 70% from the combination of BP+Fake Out. All of the aforementioned pokemon need to be removed by teammates, which I think definitely counts as needing too much team support to be bumped up to S rank.
And I just can't wait to see what ridiculous argument you come up with for this one.