Well, lets test that.
Mismagius vs Milotic, every set besides the SubPlotTaunt one gets out recovered and hazed. Tie
Registeel vs Milotic, they both do piss poor damage to eachother, but Milotic has instant recovery, which makes it stall out longer. Milotic Wins
Clefable vs Milotic, Clefable can't out damage Recover+Leftovers and gets PP stalled out of GRass Knot. Milotic Wins
Toxicroak vs Milotic, any set without Taunt gets Hazed. Tie
Torterra vs. Milotic Neither can siwtch into eachother. Tie Althought it is something to note that if Milotic has 50 evs put into speed, Milotic wins.
Ok I edited out your semi-coherent points.
Mismagius: How the hell does Milotic tie against Mismagius. Don't tell you you're gonna spam Haze when Missy comes in so it can't set up. +2 Thunderbolt does
74.8% - 88.5% to the standard Milotic, an obvious 2HKO at +2 then +0. This means you can't stay in and Haze it, because you're gonna get killed the next turn. and what's more, they can even choose to set up more NPs as you're forced to recover. SubCM versions set up an unbreakable Sub in your face. Even at +1, Missy still does
56.5% - 66.7%, a 2HKO. You're forced to either Haze or Recover, and Missy can just keep boosting and attacking since you're not going to be breaking her Sub thanks to CM's SpD boost. Mismagius obviously wins.
Registeel: Who is going to switch in Registeel into Milotic and try to take it down 1 on 1? Registeel doesn't come in to try to kill Milotic, it comes in to set up. Milotic's pitiful damage lets Registeel have practically free turns to set up SR,
TOXIC Milo, and then GTFO and let something like Venu come in for free. Sure, Milo beats Registeel 1 on 1, but that's only going to happen when they are the only two pokes left. Milo is free turns and set up bait.
Clefable: Again, same situation as Registeel. If I switch Clefable in to Milo I'm not trying to kill it. Clefable can come in, set up SR, Aromatherapy to heal her team,
TOXIC Milo, and not to mention it has reliable recovery as well so you're not killing it anytime soon either. Milo is free turns and set-up bait
Toxicroak: You have got to be kidding me. Like with Missy, you're going to just spam Haze so I can't set up? Of course not, unless you really are that bad of a player. Croak has a free turn to set up a +2 boost in either attack stat as you pitifully Ice Beam it for like 30%. As you haze, +2 Low Kick with Life Orb does
78.6% - 92.6%, an easy 2HKO with the next turn unboosted. +2 Focus Blast does
80.9% - 95.4%, so it's the same situation, and Croak can use Sludge Bomb the next turn to ensure Fail Blast doesn't let him down. Seriously you can't use Haze as an argument when Milotic gets 2HKOed
easily by a +2 attack followed by an unboosted one. Milo is set-up bait AND gets killed.
Torterra: OK so Torterra can't switch into Ice Beam, but I guarentee you that out of all the turns in the battle where Milotic is using a move, Ice Beam will NOT be more frequent than Surf and Recover. Any smart Torterra user isn't going to immediately try to send in Torterra, they wait for an obvious non-Ice Beam move. And all those speed-creeping Milotic that run enough speed to beat
x offensive threat are just asking to be 2HKOed by
y offensive threat when they normally wouldn't be. Tie only if Torterra user is stupid. Otherwise win.
EDIT: ninja'd by Conflict