Why is Latias OU while Latios is Uber?
Specs Latios Draco Meteor vs Scizor: 65.89% - 77.84%
Specs Latias Draco Meteor vs Scizor: 58.60% - 69.10%
CB Scizor Pursuit (No switch) vs Latios: 86.09% - 101.32%
CB Scizor Pursuit (No switch) vs Latias: 78.15% - 92.05%
To answer this, I spose it's because one Latias is dominant enough, with Latios, you can essentially have to Latias on your team without breaking species clause. Shove on a Magnezone to remove Scizor and that's a bloody dominant team.