An interesting interpretation on Brahms's 2nd piano concerto

I found a virtual recording of part of the first movement of Brahms's 2nd piano concerto using only physically-modelled instruments, as claimed in the description.  The piano used is not mentioned, but sounds to me like the 1829 Besendorfer in Pianoteq, so I post it here to share it with you guys.  The performer is Han Zhao, a young conductor and pianist focusing on historically-informed performance.

https://www.bilibili.com/video/BV12q4y1F7Dn

I find this version having an unusual vibe, very different from what we are used to.  Any thoughts on that?