Komplexer had the ability to import wavetables which I really wish Largo had and I think the ARP was a better GUI implementation, I find Largo fiddly in that respect. I have in my mind that the sound difference is down to the Brilliance setting in Largo which I don't think Komplexor had, so maybe setting that to 0 would perhaps give a similar sound to the oscillators.
I haven't installed it for years now, although I do have a fondness for Terratec as they made the first Pro soundcard I owned in the 90s, EWS64XL which had a Waldorf MicroQ synth built into it. I might dig it out and have a compare.
Incidentally those with a Blofeld, the new Blox Editor supposedly converts Micro Q and Q presets for the Blofeld. I haven't tried that out yet but I do own it and it's great so far, behaves like the Virus TI plugin so no more having to deal with Hardware preset management, it automatically updates the hardware when a project is loaded. The Mixer Volumes/Pan has to send a huge sysex chunk and so interrupts everything which is a bit annoying which I hope can be changed to CC 7 and 10 instead at some point. Aside from that and a couple of other small bugs I really like it.https://www.mysteryislands-music.com/product/waldorf-blox-audiounit-vst-librarian-editor-plug/
It could so easily have an MPE mode which would be great if one preset automatically updated all the others, I've emailed and suggested it, so hopefully he'll consider it.