Common sense says that if creature X in the game world can do Y simply by virtue of being creature X then logically the formula is X=Y.
If X does not equal Y under certain conditions then those conditions should make sense within the framework of the game world. If they do not then there will be common sense issues.
"Broken" has no meaning within the framework of the milieu. Broken would thus need a translation that has meaning from within to avoid the logic errors.
One of the central conceits of 4E is that PCs and NPCs/monsters are built using different rules. Given that, of course the abilities and powers of PCs are going to be different from that of NPCs and monsters.
Not accepting that is, of course, going to introduce all sorts of problems with the game.
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