I am saying - if Soaring is considered it should not.Hang on, why is Soaring being considered in this at all? From a mechanics perspective it has absolutely nothing to do with Lati@s; you could trade away both Latios and Latiosite and you'd still be able to soar. I don't understand why this is included in an argument for Lati@s.
The reason I consider Lati@s S-rank is because it's literally a free gift you do nothing to obtain, is very fast, very powerful and even if it lags behind a few levels due to it being a low Exp gain you can always Mega Evolve to make up for it. The only possible problem is movepool, but even then Dragonbreath, Mist Ball/Luster Purge and Surf served me fine. It's literally a free powerhouse with a free Mega Stone, I can't see it going anywhere below S.
Lati@s is a free gift, but the problem is that even Pokemon like Castform are a free gift and they don't really contribute much. For Lati@s, it's available from gyms 6-8, the Elite 4, and then Team Magma / Aqua phases. Let's actually break down Lati@s's contributions throughout the period that they exist to endgame:
- Lati@s have major issues with Mightyenas that Team Magma / Aqua always pack. Magma and Aqua's key Pokemon (Grimer / Koffing and Carvanha / Numel) don't really pose much of a threat to the Lati@s (Muk can maybe survive MLatias Mist Ball I guess which could suck facing a STAB Gunk Shot afterwards). Golbat / Crobat aren't much of an issue for Lati@s honestly. So for Team Magma / Aqua Lati@s contributes well.
- Winona only really fears Lati@s if they stack Charge Beam after Charge Beam. Swellow may be faster than Lati@s, which can be a minor headache since it means taking damage throughout the process. You also won't OHKO Skarmory which kind of sucks too. They contribute okay, but they don't really stand out.
- Tate and Liza is about evenish. I wouldn't really say they're great but not bad here either. Shadow Ball / Grass Knot will do the trick against them. At least they resist almost everything thrown at them (barirng Solrock Rock Slide but that does middling damage).
- Charge Beam / Calm Mind / Grass Knot will wipe Wallace clean.
The Elite 4 poses nothing but problems for Lati@s though. Sidney, Phoebe, and Glacia almost leave no opportunity to really set up for Lati@s to sweep through. Lati@s can maybe pick off a Pokemon or two here and there, but that isn't really saying much. Drake is so-so - I think Mega Latias can set up on Altaria but I'm not sure. Steven isn't even friendly to Lati@s.
The main thing is they can probably carry you from when they join to about Wallace. But they just don't crush in the same way Kyogre and Groudon do. Their availability is also smaller than Mudkip and Torchic as examples. Ultimately the problem is that Lati@s can carry you through the midgame with the gyms and Team Magma / Aqua, but their late game is very non-existent. I feel that if the Lati@s had an actual Elite 4 presence it would solidify their slots in S Tier. As it currently stands, though, I'm really shaky on allowing Lati@s a free pass when they don't really bring that much of a benefit to the table.