I totally agree with you about Electric-type pokemons. They desperately need a Duelling-side rebalance.
I have started duelling for the past month, and I noticed how very few electric pokes like Galvantula or Emolga, maybe C Vire (Reflect + Brick Break)?, are great for duel but for the others "luck" represents a key factor. For instance, I remember a duel: My C Vaporeon ab: Hydration (Reflect - Rain Dance) vs C Jolteon (Reflect - Discharge). I won with C Vaporeon: We both used Reflect basically at the same time, thanks to Rain Dance + Hydration Wild Charge/Swagger had no Stun-effect, by moving constantly I dodged Thunder, and Electric Storm didn't hit my C Vaporeon... not even once (I was surprised by this). We duelled a second time and C Jolteon won, but I left it on Red HP. Just like Garkstal said, water type pokes have really good abilities, but this is REAL Pokemon's fault, not Padventures xD ).
Electric-Type pokemons are strong against Water - and Flying Types only and ironically this 2 types have healing moves (Roost - Aqua Ring).