I have the option of plying my Lyra Atlas through either the MC or MM input of my Nagra VPS phono, the latter with an Ortofon SUT. Same cart same system yet to my ageing ears the SUT has more sparkle and realism.
As Audiofun noted, the VPS uses internal SUTs on its MC inputs, so all you've done is compare one SUT with another. The greater sparkle and realism of the Ortofon vs. whatever transformer Nagra uses tells us nothing about how an active MC stage might compare.
Regarding Shindo, I've heard the Monbrison + SUT (don't recall which, sorry) vs. my Doshi Alaap (all active gain). It wasn't close. The owner put his kit up for sale and ordered an Alaap.
The best SUT-based solution I've personally heard was Swampwalker's now-departed VAC Renaissance. Like your Nagra, it uses internal SUTs for MC gain. It was very credible, one of only 2 or 3 preamps I've heard that play in the same league with an Alaap, but it ultimately fell short in speed, dynamics and lowest level detail. The result of that comparison session is listed in Swampy's current system. ;-)