@ SJCrew: Agreed that Deo-A decimates everything besides Scizor (and sometimes Skarmory). But Zor can totally switch into Deo-A and take around 40% or so. Besides Espeed doesn't do jack to Steel types.
@E Pika: Modest Rain Specsdra is insanely powerful. Anyway, people are probably EVing their Wobbs wrong.
No, they're doing it right, pretty much maxing both defenses for best surviveablity. It's just a Rain Dance Stabbed Boosted Hydro Pump does a HELL of a lot of damage to things that don't resist like Wobbuffet and his defenses aren't that good. The fact that he does survive is more amazing than that he takes so much damage because a lot of other things fall to boosted Hydro Pumps in Rain.
If you want to gamble, Deoxys could if he wanted to destroy Scizor. Choice Band Scizor (the standard one 248 hp/252 Atk/10 Spd) is
2 hit koed by Life Orb Psycho Boost and the problem is if Scizor switches in on that, he's almost crippled since he's got like ~28% health left. At -2, Psycho Boost will still ko Scizor. The problem is that now Scizor can't come in now on much of anything else, even if Deoxys does die and you play a prediction game. Scizor can Bullet Punch, ohkoing Deoxys. But if you Bullet Punch, it could switch to something that resists Bullet Punch, they have a healthy Deoxys to take out more of your Pokemon, and Scizor is in deep trouble and can no longer switch in on Deoxys later.
Scizor only works as a revenge killer after Deoxys killed something. It
can't switch in on Psycho Boost at all. Actually, Super Power is also a 2 hit ko on Scizor so it can't come in on that either. If it carries Hidden Power Fire because it's paranoid, Scizor sure as hell can't switch on that either. If Scizor tries to Pursuit expecting Deoxys to run, Psycho Boost blasts it into oblivion. Should Deoxys die, Scizor can get trapped by the next poke or something. Either way, Deoxys will have lured out and severely hindered/killed a major threat or neccessary revenge killer of the opponents and if it manages to escape unscathed, it is unlikely the opponent will have much to stop it with, considering they sent in Scizor earlier.
The only counter for Deoxys is Spirtomb who is also useful to kill Latios although it can't be switching in on Draco Meteors since Modest Specs has a very good chance of ohkoing. Actually, Spiritomb is a useful counter to almost all offensive Psychics. Sableye CAN work on Deoxys A...maybe. Most Sableye's aren't going to be carrying an offensive move (like Punishment or something) because of Sableye's eh attacking stats. It is more likely to carry Night Shade or something. Statusing Deoxy's is not going to help. However, the problem with Sableye is that if Deoxy's-A is using Icebeam and Sableye made the mistake of switching in on an Icebeam (should it be that unlucky), Sableye will eventually lose before Life Orb kills Deoxys. However, that is only a situational win for Deoxys and most of the time, Sableye will trounce it and Icebeam is need over Shadow Ball/Hidden Power Fire, etc to do enough damage to force Sableye to keep Recovering to surivive but doing over enough so that slowly it will build up that the final Icebeam (at like 30~ health from Life Orb unless Deoxy's Critical hits in which case it 1-2 hkos) kos.
And how many people use Sableye (despite being much better now with Mischievious Heart)?