Alright lemme provide some calcs off the top of my head, though some feats from the show are through spoken word/Word of God.
Season 1:
Tier/AP/Striking Strength: At least High 6-A (Multi-Continent), possibly 5-C (Moon)
Chris Yukine is able to block
most of the Kadingir, a giant laser cannon which would have destroyed the moon. Only a chunk of the moon was damaged (though in the first season, it looks like a quarter was destroyed, in all the later season it seems there's only a large crater taken out). Tsubasa was later able to destroy the Kadingir all on her own.
Speed: Relativistic (at least Mach 86,207)
Finé's whip was able to reach the moon from the surface of the Earth in about 13 seconds. Considering the
average distance between Earth's surface and the moon is about 238,855 miles, divide that by 13 and we get that the whip is traveling at 18,373.4615 miles per second. Translate that into mph, and we get 66,144,461.4 miles per hour. Then translate that into Mach, and we get 86,207.639 speed of sound, or Relativistic. The girls are constantly seen dodging her whips.
- spoiler alert for Newendigo from here on out*
Season 2:
Tier/AP/Striking Strength: At least Low 5-B (Small Planet), possibly 5-B (Planet)
The girls are constantly referred to as being stronger than in the first season (especially Hibiki), but it's never really stated how much stronger. However, in the season finale, the 6 Symphogears are able to kill the Nephilim
just before it has enough power to completely evaporate the earth. Although they were all in X-Drive mode, so Low 5-B, possibly 5-B may be applicable to only that, leaving the rest of the girls at
At least 5-C, possibly Low 5-B when in base for season 2.
Speed: Speed of Light, possibly far higher
In Hibiki's fight against Miku, Miku's mirror lasers are constantly referred to as being real light (think danmaku from Touhou). Hibiki is seen being able to dodge multiple lasers at once, and Chris was seen fighting evenly with Miku earlier, meaning the rest of the Symphogears should be comparable.
Season 3:
Tier/AP/Striking Strength: At least Low 5-B, at most High 5-A
While the Symphogears (particularly Hibiki) are apparently weaker than before, by the end of the season they are able to defeat Carol Malus Dienheim, who was able to make an explosion comparable to a supernova. However, the girls tanking this may be a durability feat rather than an AP/striking strength feat.
Their speed should still be the same.
Lifting Strength: Class K or Class M
In the first episode, Hibiki is able to suplex an entire space shuttle. However I can't really find exactly how much a space shuttle would weigh (maybe I'm just not looking in the right places), so if someone could do that I'd appreciate it.