Not necessarily.
A cleric of any level can be of use in a situation as you have mentioned. For example, a level 33 cleric can almost match a higher level cleric if they know what to do in a Robo KQ. Similarly, a mage that knows what to do and doesn't get him or herself killed can at least participate. They may miss more often or do less damage, but if they aren't some egoistical asshole or a complete idiot, they should be allowed to participate.
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