[Grammar] not of the same caliber

[BloodyRed]

Hello everyone!

I want to tell my friend A that his skill is far ahead from that of Friend B.
Is it grammatically okay to say

"He's not within your caliber"
or
Is there another way to say it?

Thank you so much for any suggestions! ;-)

 

[Charlie Bernstein]

Hello everyone!

I want to tell my friend A that his skill is far ahead of that of Friend B.
Is it grammatically okay to say:

"He's not within your caliber"
or
Is there another way to say it?

Thank you so much for any suggestions! ;-)

Sounds strange. I might say "He's not your caliber" or "He's not of your caliber."