Some ppl may not realize that Raid on PvP will required FAR MORE efforts, especially those "top guild" toons from "PvE"

you will gonna need EFFORTS even to step into the Raid Entrance safely and on time.

In short, you need to be a hardcore player to be "eligible" for Raid Progression on PvP realm. Unless the realm is 1 side faction owned.

Welcome to the Raid Entrance camping zone.
Be sure you reach into the raid safe and timely.

1. Raid gather at safe spot.
2. Everyone run in together.
3. Gank whoever is at the entrance.
4. Then run in.

Hee ehee hee....

Blizzard very smart

Normally people refuse to transfer to a realm with known severe imbalance, so they open up PVE to PVP transfer since people are practically dying to dump their PVE server.