Everyone's trying to redesign the thor but...

erm, emp is a weapon that destroyes protoss shields

 

emp knocks out energy, doesnt bombardment require energy in order to be used?

 

wasnt feedback the one that destroyes energy?

 

feedback is from the twilight archon that burns only mana each point of mana burned is dealt in damage, EMP burns all mana and shield

 

This is why you don't purely use the Thor as defense. StarCraft2 is about diverse armies. Stick a couple of Vikings in your army to counter the Warp Rays, but then the Protoss could build some Phoenixes, so the Terran will build Battlecruisers, so the Protoss might build more Warp Rays, so the Terran could mass Marines, etc. If you just had a couple of Thors defending your base then, yes, they would get snapped. If you had a diverse range of units defending your base, including Thors, then you will be able to fend off most attacks.