Are even OP characters like Darth Vader and Obi Wen Kenobi kinda outmatched against multiple AT-DTs, TIEs and other machinery coming all at once?

I kinda noticed in Rebels Season 3&4 that there is no single extremely powerful foe but the rebel's primary enemy is always technology, spaceships and hordes of enemies . Individual strength doesn't matter as much as the numbers or strategy, kinda the reason why empire equipped solders with blasters instead of lightsabers