Thor will literally be invisible to them. He doesn't give off any heat signatures, and he's too small to hit. You realize they use targeting computers to hit the other ships, not eyeballing it. 2 meters is 6'5 feet. The size of the thermal exhaust port on the Death Star. Luke only hit that otherwise literally impossible target because he used the Force. And that was on a stationary target. Imagine all those non-Force user trying to hit a womprat sized target flying through space at beyond supersonic speeds as Mjolnir has gone from ground level to orbit in 2-3 seconds. A target who they can't use tracking equipment on as he's not a ship. He's a guy in space with a hammer that also doesn't give off a heat signature. Also he can zap lightning all through space. Or just fly through ships willy nilly.
Not true. Anakin was dusting droids with a ship from Naboo. They are smaller then Thor. And this is a dumb argument. People in star wars shoot each other with tiny blasters from 30-40ft away.
It's like saying an At-At can't hit foot soldiers cause they are too small? Do you realize how stupid this sounds?
For the moment lets assume that he cant fly in space, and instead, goes from planet to planet via Bifrost raining down chaos on his targets...
That might actually be worse for the empire; they wont be able to use their strongest weapons on him if he's fighting on a planetary surface (or atleast well within a planets atmosphere)...
Although that might allow them to nuke Thor with the Deathstar...
They'd have to sacrifice an entire planet to get him, but I did say earlier that they'd take heavy losses before they brought Thor down...
With that being said, I would love to see him square off with the emperor, for no other reason than to see the look on Thors face when palpatine tries to shoot him with lightning.
I can't comment on Anakin, I don't remember the particular scene you are referencing.
None the less, I don't know what point you're trying to make, you're comparing hand weapons and cavalry type stuff to massive ships that aren't intended to strike against one human sized object. It'd be like trying to shoot a fly with a harrier.
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Besieged by countless foes, his eyes they are aglow, longing for the fight. He stands upon a mound, doesn't aim the throw, just lets the hammer fly!
And if you read the OP this is pre Empire, what are you saying then? Also TCW, there was Star Destroyers inner atmosphere, I don't know what point you are trying to make.