Differnt card description

[r0man]

Hello! Could you explain me correct behavior of Facewrom cards set (faceworm larva [27167] + faceworm egg) in english version it is +15% for combo, but at kRO only 5%, which one is correct? Is it possible that new cards which hard to farm could be in combo like simple Raydric card?  

[Dia]

The korean version should be correct, 5%.