Maybe so, but Flygon is having to revenge it immediately otherwise it dies. Also, think of the scenario this way:
Nattorei has just switched into your Suicune.
Player1 withdrew Suicune!
Player1 sent out Blaziken!
Nattorei used Spikes!
Speed Boost raised Blaziken's speed! (it is now at +1)
Player2 withdrew Nattorei!
Player2 sent out ScarfGon!
Blaziken used Swords Dance!
Speed Boost raised Blaziken's speed (+2/+2)
Basically what I just illustrated is...if Blaziken forces something out, your revenger has to be able to either take a +2 hit and retaliate, or outspeed Ken at +2. With the EV spread I provided...that means +Speed base 121 with a Scarf or higher.
Blindly switching Blaziken in is a horrible idea, as it is easily revengable with no speed/protection.
see my above post I have a similar example as this but explanation has been done, and if it was me i used explosion(it has to learn it, I mean a clamp and magnet learns it there's no reason why it wont learn it) instead of switching out,so that if you Kill me you fail to KO my next poke without SD if you set up you die because of Explosion, its called react differently depending on the situation?
This. I don't expect Crawdaunt to be big at all, maybe Azumarill (and Dragonite will run Extremespeed > Aqua Jet, but that point is irrelevant here).
Dragonite Extremespeed will still do a lot of damage to you probably 2KO you after you switch in and getting damage by entry hazards, dosent make much difference and your HP-ice fails to OHKO bulkynite and now with its new ability, I doubt you will want blaziken stay in when against nite
What I really want to highlight is the latter point. Switching in your revenger expecting SDKen could horribly backfire should you switch into the following:
Blaziken@Target Mark/Aiming Mark
Rash; EVs
Fire Blast
Substitute
Focus Punch
Hidden Power Electric
Stare in horror as your switchin is decimated. Shandaraa attempting to revenge is Focus Punched into oblivion while Blaze nets +2 speed; bulky waters are electrocuted by HP Electric (including Swampert, thanks to the aiming mark). And when all is said and done, Fire Blast cleans. And before crying that Infernape outclasses the set, note that the lack of boosting moves here make Blaziken's naturally higher offenses much more threatening, not to mention Speed Boost. Plot/SD Ape is too slow and frail to be attempting a sweep.
Blaziken is no less versatile than it has been since Ruby and Sapphire.
This is one of those situations where you would SD, predicting the switch. If your opponent really wants to sac Skarm when you have a dragon/Doryuuzu waiting in the wings, that is their choice. I also think that you are seriously underestimating the power of Blaziken:
372 Atk LO HJK vs. 302/196 Def Flygon: (114.24% - 134.44%)
A solid OHKO. And even if it weren't, Blaziken has nothing to lose from switching. It didn't waste a set-up; it killed Skarmory.
some of your situation are similar to the ones I stated, I've already explain most
