Understand ipsec tests

Hi,

On the page of each product, in the section “IPsec test results” https://mikrotik.com/product/RB750Gr3#fndtn-testresults

What does the mode column mean?

Mode - Single tunnel - This is a site to site tunnel, a tunnel or is it referring to SHA1?.
Mode - 256 tunnels - Is this 256 tunnels configured and transmitting/receiving traffic or is it referring to SHA256?

Thanks.

256 tunnels refers to setup where router has 256 parallel VPN tunnels established and is passing traffic towards all of them. Different cipher lengths are explicitly stated in separate rows.

And why is most routerboards more powerfull with 256 tunnels beside 1 tunnel?

rb750gr3-ipsec-0002.png
??

LE: edited initial picture (cropped).

???

What is unclear in that picture?

Thank you so much @mkx

Resolved. Everything else contributes nothing.