Serebii says that String Shot now raises the user's speed two stages along with its previous use, essentially making it a better Agility. Source:
http://www.serebii.net/attackdex-xy/stringshot.shtml
Speaking of bug-type moves that lower the opponent's speed, I think the best counter to Sticky Web right now is Malamar. In fact, with Cresselia weak to one of its STABs and actually getting an attack boost from Intimidate, it seems like a great anti-meta pokemon in Doubles.
Malamar @ Life Orb
Ability: Contrary
EVs: 252 Spd / 252 Atk / 4 HP
Jolly Nature
- Superpower
- Night Slash
- Psycho Cut
- Hypnosis/Substitute
252 Atk Life Orb Malamar Night Slash vs. 252 HP / 0 Def Cresselia: 213-252 (47.97 - 56.75%) -- guaranteed 2HKO after Stealth Rock
+1 252 Atk Life Orb Malamar Night Slash vs. 252 HP / 252+ Def Cresselia: 237-281 (53.37 - 63.28%) -- guaranteed 2HKO after Stealth Rock
The set is the standard for Malamar, with one exception. With Life Orb, Malamar becomes much more powerful, allowing it to score powerful OHKOs and 2HKOs where it couldn't before. With attack boosts from Superpower and Intimidate, it can make a good lategame sweeper. Thoughts?