SSC Grievous is a 10+ year old figure. Yes it's on Sideshow they re-released an outdated fig in the past several years with few if any improvements as a cash grab.
I think the "SSC sucks" discussion by default involves elevating HT. I mean what else is there that "is" the SW higher end figure market when saying SSC doesn't match up. I'm just saying HT is fairly often a mile from perfect, and a lot of their SW figures are middling at best.
I'd whole-heartedly agree on the sub-par level of SSC's human offerings, even the most recent - their Lando skiff and Luke Jedi had really subpar paint and only middling sculpts - but then again I still prefer SSC's old ESB Lando sculpt in terms of BDW likeness over the HT ESB Lando (I have two of each) But yeah there's been a ton of SSC quality control issues over the past 15-20 years, mostly in regards to poor quality bodies (SSC Jawa, despite being a really nice looking fig that totally blows away the HT Jawa, had a god-awful body.)
But with a few exceptions (not a huge fan of their cantina musician, Yoda or Greedo sculpts) SSC's creatures have been fantastic - the Tusken, Hammerhead and even their old Jabba are incredibly accurate sculpts. That's what makes me really excited for these figs: they are what SSC excels at, and body issues should be solved by now.