When I read your comment, I thought that you were making a mistake, but after solving this problem, I realized how right you are.

You are failed at the 3rd test. The value should be same not just part of it.
It's check for not same with [{"name":"Wendy Corduroy", "age":"15", "speciality":"sociable and nonchalant"}]. (Actually, it should be [])

Description you gave is the only reason I passed, thanks.

Which language?

Also, please markup your code.

Can you give a specific example that your solution passes that it should not?

Kyus of approved katas cannot be changed, this is a suggestion nobody can fulfill.

i would agree with that

Thank you both for a clear description. Passed on the first attempt after reading it.

it's not hard at all, the instructions are just extremely vague

getting better wont make up for piss poor explaination/description of problems

thank you man! i am grateful to u

Couldn't agree more.

Probably a problem with operators precedence, I just tried your code and it worked changing pow with **.