Learn the definition of a counter... please.
A counter is a Pokemon that switch in and pose an immediate threat. All of the mentioned can do that to Aggron.
I know this, but most of those are counters by the time they get there. All of these plus stealth rocks
Suicuine- 50 on the defensive Suicune, 73 on the offensive suicune, neither can out speed.
Cressila- 41- This one is a counter
Hippowdown- 31 with Earthquake- counter
Skarmory- 56, out sped, can't hit back
Swampert- lol yeah, counter, basically the true counter big time. If only he learned Grass Knot
Bronzong- counter, no need to check
Flygon- counter, no need to check
What I meant was that they can't switch in early in attempt to stop me from setting up Aggron. So we are left with Aggron having 5 counters. Bronzong, Hippowdown, Swampert, Flygon, Cressila
350 Atk vs 320 Def & 404 HP (150 Base Power): 177 - 208 (43.81% - 51.49%)
I did >_>. 0% chance for a 2HKO with Leftovers, 5% chance to 2HKO with both Stealth Rock and Leftovers.
236 Atk vs 150 Def & 281 HP (120 Base Power): 204 - 240 (72.60% - 85.41%)
Grass Knot vs Aggron
By this, you are still going to die before you kill Aggron.
1 on switch
1 on next turn
1 next turn to kill
I meant the choice scarf Salemence that would actually out speed choice scarf aggron.
http://www.smogon.com/dp/pokemon/salamence
5th most used set, and Belly drum is right below it lol. Are you really going to shallow him in to counter Aggron? Doubtful.
Let's go down the list and see what Aggron can destroy when set up-
1 | Scizor | 248338 | 32.22 - yep
2 | Salamence | 161052 | 20.89 - yep
3 | Gyarados | 155008 | 20.11- yep
4 | Heatran | 152955 | 19.84 - yep
- | Rotom-A | 151740 | 19.69- yep
6 | Tyranitar | 135677 | 17.60- yep
7 | Metagross | 130152 | 16.88- yep
8 | Lucario | 123887 | 16.07- yep
9 | Infernape | 112428 | 14.59- yep
10 | Jirachi | 110122 | 14.29- nope
Top 10 most used, only 1 can switch in safely without being KOed for sure either this turn or next. The numbers only get better from there.
11 | Gengar | 103120 | 13.38- yep OHKO
12 | Blissey | 100712 | 13.07 - LOL
13 | Swampert | 99999 | 12.97- nope
14 | Rotom-h | 93284 | 12.10- yep
15 | Starmie | 83990 | 10.90 - yep
16 | Gliscor | 83397 | 10.82- yep
17 | Azelf | 81045 | 10.51- yep, assuming its not a weird focus sashed one which are generally suciced leads.
18 | Vaporeon | 64336 | 8.35- nope
19 | Zapdos | 63646 | 8.26- yep
20 | Magnezone | 61344 | 7.96- yep
A continuation of the same results.
Another reason why this works, your switch in options are limited. Take Lucario. He resist Head Smash. However, EQ does major damage upon switch in. I switch out to Scizor, Lucario is dead, I've trapped him. I can hit with Scizor's mighty technican boosted, choice banned Pursuit. Then there are many other switch out options I have that can also utilize U-turn such as Gliscor and Jirachi to scare away Earthquakes, and Zapdose and Scizor to scare away surfs, while Azelf scares away fighting pokemon. The Scizor trap set up, the options out of Aggron, and the set up options into it are amazing. Both in and out, this seems like an amazing thing to me.