I think the big conclusion can be made that shields really are not a proplem. The real problem is the lack of a good armor counter. My suggestion is to bring erp back to where they were before the nerf as that gives a great equaliser to the shiels tanks we have now.
Remeber the way to beat both of these is strong neuting combind with good ecm. We want a good ballance and this gives people the option to have either shild or armor in a combat situation.