I cant think of any build that would "withstand fire power of that magnitude."
squadrons can
well, that was easy
...in theory I would agree but so far in practice not so much from my games. The problem is the capital ships get destroyed before the squadrons can do enough damage since all the ships are throwing gross amounts of red dice at long range. Now keep in mind all my tests have been red vs blue so no tests have been done using Rebels vs Rebels.