She does NOT stronger than Anakin or Obi-wan does. They make it look that way but it really isn't. For example in the movies, you can see that Obi-Wan and Anakin can defeat Magnaguard with ease(until plot required) while Ahsoka exhausting herself while killing them.
Beside, they need to establish her character as a dependable padawan(yet hothead and quirky sometime) on first season before other writer flanderize her as a damsel in distress.
Don't 'picking' her too much and you will be fine.
Also you need to remember that Anakin and Obi-Wan had previous experience fighting MaganaGuard Droids so they knew where the weak spots in the Droid's design were. I will say that I dont consider TCW series as cannon in any way. However I do think that the character does have potential in the long run. I know from the Lore that during the Clone Wars Anakin did train an apprentice, but I think they could have made Ahsoka less like Anakin was when he was a Padawan when they introduced Ahsoka in the Clone Wars Animated movie.