If Raikou was deemed to be as good as Cress, it wouldn't have survived even one round of testing in UU, never mind two on the trot. We have to respect the integrity of the pool of qualified voters as a means of achieving progress, otherwise the minority that always exists can just yell 'opinion!' every time in order to impede any and all progress. You seem to either have serious issues with the testing policies, or have little respect for the integrity of the qualified voter pool, or worse, both. I hope you remain in a tiny minority in this regard, otherwise we really will have problems.
I don't think the people in the
megathread had valid reasons for banning Cresselia and not Raikou. The voters may or may not have had the same fallacious arguments, but if something like Cresselia gets banned for those reasons it is really no one's fault; confirmation bias is a main part of human psychology.
Okay, that may be, but the point is that if Raikou and Registeel are both at full health, Registeel will beat Raikou EVERY time, no matter what Raikou runs. Don't give me stuff like "If Registeel has taken prior damage it can beaten", either, because you can make any Pokemon broken with that excuse. A "counter" is a Pokemon who can switch into any set of a Pokemon and beat it or threaten it out. Unless it is like the 2nd or 3rd time that Registeel has switched in, Raikou is not going to beat Registeel.
At any given point in a match where Raikou can come in on one of the 44%+ of the top 50 that it forces out:
I switch in Raikou.
I use Substitute. You switch in Registeel.
I Thunderbolt. You Earthquake and break the sub.
I switch out Raikou and send in Donphan to take lol damage from the Earthquake.
You switch in Milotic or Moltres as I set up Stealth Rock. I switch to Raikou.
You switch in Registeel. I Calm Mind.
I Thunderbolt, you Earthquake.
I Thunderbolt, you faint.
You have no Raikou counters left because your "hard counter" failed, so you lose, good game.
How about this one (with the Life Orb variant, just to prove this is true for both variants)?
I send in Froslass on Milotic.
I set up Spikes. Milotic uses Surf.
I set up Spikes. Milotic uses Surf, Froslass faints.
I send in Raikou.
I use Calm Mind. You send in Registeel.
I use Thunderbolt. You use Earthquake.
I use Thunderbolt, Registeel faints.
Once again, good game.
Again, if Registeel had recovery or didn't have an attacking stat weaker than that of my grandmothers, you may have had some form of an argument. However Registeel is stupidly easy to switch into, making "Raikou can hit it once, switch out, and come back in" a very very viable way of taking Registeel out with little-to-no effort.
Call Registeel whatever you want, but a "hard counter" to Raikou it
isn't. Chansey is the only Pokemon that can do this; Raikou passes its other counters much to easily.