Care to elaborate on said circumstances?
What here to elaborate about? Balin cancels any shadow effect anywhere anytime and only needs to pay a resource, which there are abudance of in the leadershit. Erkenbrand NEEDS to defend HIMSELF and pay 1 health (which might not seem a lot, but for the defender with medicore base def in the sphere without healing could be not that neat).
How is outright cancelation inferior to dealing a new shadow card? Erkenbrand is not a poor man's anything. Also, 3 defense with Sentinel makes him great for multiplayer.
By itself - it's not. By the circumstances both of these can be triggered - it's inferior by far.
Worst case scenario Erkenbrand takes 1 damage instead of being killed outright by an awful shadow card. Balin would have to spend a resource and the defender could still end up dead when the replacement shadow card is revealed.
Less flexible? Yes. More of a risk/gamble? No. Inferior to Balin's? No.
Worst case scenario Erkenbrand takes 1 damage and then dies from attack because now this attack has enough damage to kill him. Balin would have to spend a resource and the defender could sitll end up living when the replacement shadow card is revealed.
Less flexible? Yes. More of a risk/gamble? No. Inferior to Balin's? Yes.