I feel your pain... recently got into a FDL kitted-out and square off point blank with a Asp Scout that seemed like a Python taking my 835 worth of shield down in record time and was getting through my hull fairly fast... before I fled, I thought I saw the Incredible Hulk through the glass of the cockpit, which put things into perspective.
Anyway, hang in there... I heard that there's an update coming on the 3rd from another thread.
In the meantime, another gent posted that he down-graded to a smaller ship and spawns seemed a little less hulk-ish. I'm in the process of testing that theory if I can just find some class-3 bi-weave shields... have come up empty using Rougey's finder even on one that was reported just 2 days ago. :S
Edit... Well... tested that theory and with my lesser ship (DB Scout), lesser ships were spawned when interdicted, but they still cleaned my clock.
Just curious... are you playing version 1.6 (not the Horizons expansion)?