I'm sorry, I really don't understand what exactly you think changed.
Is it the graphical presentation? Or that the cards do things that they don't do in the physical card game?
Warrior and Hero are different cards, and they work the same digitally than in the physical card game. The grpahical representation is slightly different (no artist names on the card, card text may be formatted differently), but IMO nothing mayor.
If you can explain in more detail what changes you are referring to, that would be helpful to understand the problem.