Pretty sure your first is weaker with a key between your fingers.
Discussion
Depends on size, training, and other matters. A minor slashing weapon like a key and with an intent to go for an eye can be useful in some contexts.
Goal wasn’t to land a good punch, but to go for weaknesses to stun so I could get away to somewhere safe. Luckily never had to see if it worked 😂
I’ve been able to diffuse dangerous situations with words, body language, & sometimes help from others; not strength.