[twic]

You could say:

We value the ability to work with others over exceptional technical skills. That is, while there is value in the latter, we value the former more.

No "no", no defensiveness, but the preference is clear.

[SomeStupidPoint]

That's still defensive.

"Here, we place a strong focus on ability to work with others and collaboration. Success requires teamwork!"

Don't justify your preference, just state it directly. It's not about tradeoffs, it's that we're fundamentally doing something collaborative -- everyone needs to be on the same team.