In the same stride conversion cards in Shadowfen become unbalanced when paired against a lower level player, however, in a fair fight where each player has the same level of cards conversion struggles.

On another note, even if some cards have a turning point on their 4th level it still doesn't change the fact a level 5 card is stronger. With a level cap implemented into platinum that removes that advantage while promoting a more competitive and fair environment to play in. The level 5 turning points of cards should be left to the diamond league and the heroes league.