So... Luke's X-wing can just ignore the heaviest shielding on the heaviest warship. He doesn't even have much of a specially upgraded fighter. To be ok with this, but frown on the Falcon doesn't make any sense to me. The Falcon is much more comparable to a whole squadron of fighters than Luke is genuinely that good against cap ships in the fluff.
Heroes are heroes. This is a game based on an epic space fantasy opera. The expectation should always be that heroes will be larger than life.