In pwow, spell reflection value is correct for spells that copy/return other spells, just reflections are bugged.
Example of spells where the reflect value work (where its not 100% of the dmg returned):
http://www.db.pandawow.me?spell=77606/dark-simulacrum
http://es.db.pandawow.me?spell=122783/difuminar-magia
These 2 reflect spells (more like copied to the main target/returned) work correctly.
Warrior, hunter and Meta 1% reflect gem should work the same way as the 2 mentioned before (atm reflects are bugged because they return 100% of the dmg).