So now we all have to run azumarril? It's the only thing that can revenge (and only out of sun).
CB Azumarril's aqua jet vs 4/0 blaziken: 106%-125.2%
CB Azumarill's aqua jet vs 4/0 blaziken in sun: 53%-63.6%
+2 Blaziken HJK vs 4/252 Azumarill: 117%+
CB Dragonite's Espeed vs 4/0 Blaziken: 55.2%-76.8%
+2 max+ Blaziken's HJK vs CB Dragonite: 70.6%-83.3% -remember that Dragonite is SR-weak... and sandstorm will seal the deal if it's up.
CB Lucario's Espeed vs 4/0 Blaziken:56.6%-66.9%
Blaziken's...lol not bothering.
Conkeldurr's mach punch vs 4/0 Blaziken: 33.8%-40.1%
+2 HJK vs 252/0 Conkeldurr: 110%-130% OHKO
And all these were against 4/0 blaziken, and blaziken had no life orb. With speed boost, Blaziken can afford to invest more in defense (since nearly all priority is physical, it should probably be investing in physical defence rather than hp). And it only needs LO to break through some of the toughest walls (mainly hippowdon and suicune), as well as to guarantee the KO on some lesser walls (although a layer of spikes in addition to SR, courtesy of natty or skarm, does this just as well, and gives him a decent shot at hippo and suicune as well).