ehh for sure there are other decent players on eu.
i've played eu and a few tvts/1v1s on east some years ago when I had acess to riox share chars.
I don't think duels were harder on east. They were a bit different though.

But maybe I did too few to judge
pvp on d2r (yet..) seems a bit more simplistic compared to og d2 with the changes they made.
( no wsg/str bug/synch, some changed mechanics to some spells like ww to name some off the top of my head)
I'm afraid balancing things too much may harm gameplay even further potetionally making it more bland/boring.
I know you just trying to make all classes being able to compete Ferdi. But I'm not sure if thats possible yet.
Not to mention it's much easier to use shitty eq/inv on a caster and make it viable compared to some frw melee..
One option could be like they had on East before different tier tours or within the same tour with top tier chars like sorcs/trappers/bowas/tele barb etc competing in one and weaker like frw shaper, cs zon, smite etc in the other.
It may also be hard for most people to have a 40 scs inv by december.
What if everyone used like 10 gcs + 10 scs inv?? to make it fair and alot cheaper? just a thought.