Yes, if it's equal or more, it's good.
But if it's less, it's not good .
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And in used, my current spark plugs are at 3600, 3500, 3650 ohms
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There is no issue at all in the car.
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There is no vibration, or starting issue or any thing.
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But experience/observation has told us that when ever a spark plugs resistance drops below 4000ohm, it's fuel consumption increases and high speed power decreases.
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If one doesn't care about fuel average and doesn't drive fast, he is good to use the spark plugs even if they are at 3500 ohm resistance.