Destil
Explorer
A CR does not consider how useful or powerful a creatures' powers are. It only tells you how challenging it will be to fight a creature, with regards to PC resources (spells, HP et cetera). Some could argue that often they don't even do a good job of that, but that's beside the point.
There's a huge difference, particularly given most fights only last 3 or 4 rounds. Trying to equate CR to power level never works well, really (otherwise we would have no need of ECL)…
There's a huge difference, particularly given most fights only last 3 or 4 rounds. Trying to equate CR to power level never works well, really (otherwise we would have no need of ECL)…