If two friends are celebrating their birthday together, is it rude to get one of them a nicer gift?

Two people I know have the same birthday so they’re sharing a birthday dinner. One of them is my best friend so I got him a nice gift. I’m cool with the other person too but we’re definitely not as close. They’re more of a mutual friend.
Is it rude to show up to the dinner with a nicer gift for one person? Or is it understandable that I’m much closer with one of them so of course I’d get them a better gift?

If two friends are celebrating their birthday together, is it rude to get one of them a nicer gift?
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