как ни странно in English:

Surprisingly, he is the type that worries about being in the public eye.

Surprisingly, he swims even on cold days.

Surprisingly enough, he turned out to be a thief.

Surprisingly, he did his last job in one-third the time it would take me.

This book is surprisingly easy to read, isn't it?

Surprisingly, he was good at singing.

The editor was surprisingly young.

I polished for all I was worth. The trouble is that my stock of low-grade gems was surprisingly low.

The key is that Asuka abuses Shinji. So, rarely, Shinji flips and assaults Asuka. Then Asuka is surprisingly meek.

What he said there was surprisingly difficult.

When you're at work, if you have a lot of workmates, it's surprisingly difficult to build a consensus.

The joint-stock company looks surprisingly durable

it was surprisingly good film

It cost surprisingly little to upgrade the system.

The introduction of video replays to sport was a surprisingly fundamental change.