I'll fix your team well
Your repaired team:the stats are recommended
blaziken:hasty(mixed) item:salac berry
earthquake
fire blast
endure
reversal
stats-hp

ver 300 attack:339 def:176 sp.att:257 sp.def:168 spd:283
blaziken's fire attacks increase by 1.5 when in critical condition, so if blaziken was hit be psychic and his HP was reduced to 1, his fire blast would raise up to a power of 270 with STAB. kick ***. Reversal is pretty much game over if used in critical condition. Kills kyogre in a single hit.
Raichu-Modest(Special Sweeper) item:bright powder
ThunderBolt
quick attack
protect (protects against EQers)
HP grass
stats: hp:287 sp.att:306 speed:298
Hp grass is for ground types. sp.att and speed should be maxed out no matter what. close is good enough.
Gardevior-Modest(Spec Sweeper) (good Job) item: a salac berry
Psychic
ThunderBolt
Calm Mind
Thunder Wave or HP dark
stats:HP/294 sp.att/383 sp.def/276 at minimum spd/258
thunder wave is awesome if a faster pokemon appears. take good advantage of its special attack. calm mind and psychic pwns most adversaries. top it off with a salac berry and it would make an amazing sweeper. even better than Mewtwo in my opinion.
Salamence-Hasty(Mixed) item: lax incense
FlameThrower
Dragon Claw
Crunch
earthquake
stats-hp:356 attack

ver 330's def:176 sp.att/must be over 290
sp.def/187 speed:328(maxed out no matter what)
In the final challenge of pokemon colosseum, an old man named Infin uses a salamence with a hydro pump, you can get this by breding a male gyradus with a female salamence. Lax incense can make opposing pokemon miss up to 3 times if you're lucky
Metagross-Adamant(Phys. Sweeper) item:lum berry
Meteor Mash
earthquake
shadowball
agility
stats:HP/312 attack:406(ha, max it out) def

ver 300 sp.def:220's
speed: 170+
agility to counteract it's poor speed. Shadowball for shedinja if blaziken dies. also kills soul dew latios.
starmie: Timid (special sweeper) item

etaya berry
hydro pump
thunder
ice beam or rain dance
psychic
stats:hp/283 sp.att and speed:maxed out. sp.att would be 298 and speed would be 361.
Starmie is one of the most overused pokemon in the game, very high sp.att, and a speed that matches the legendary beast of thunder. You can also replace ice beam for rain dance if you want to.
Hydro pump: 120xSTABx1.5 bonus in the rain-that would give a total of 270 power. if in low condition and if you have a petaya berry at your disposal, your hydro pump's power will rise up to (270 X 1.5= (405) waste some major ***) yeah basically....