Is the loss of a grandchild worse than losing your child?

My cousin (one of my grandma's grandchild who is now a father himself at the age of 21) got saved for either getting hurt or losing his life. He was on his motorcycle when suddenly a vehicle hit it and threw him on the ground a couple feet. He was facedown.

Luckily he had his helmet well placed and nothing major happened to him. He's ok but that news nearly made my 81 year-old grandma faint. If he wouldn't been without his helmet or not hastened it, then it would've been a different story.

He could've been hurt badly or killed. Then grandma would likely have a heart attack. She has 5 grandchildren and 2 great-grandchildren. Is losing a grandchild actually worse than losing your child?

Is the loss of a grandchild worse than losing your child?
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