You might want to see this. A group was talked about: Any shallow angle shavers out there? - https://www.badgerandblade.com/forum/threads/any-shallow-angle-shavers-out-there.612847/If there's a Low Angle Shavers Alliance, I'd be happy to join
If I shaved by riding the guard with the GC .68 OC, I'd literally get a bloody mess instead of a shave, mostly because the razor simply wouldn't cut my whiskers and would chatter, tug or dig in without some significant application of pressure to the head ...and yes, I prep, I'm a shower shaver and my shaves happen at the end of the shower after at least 20 minutes of my face being wet.
Directly under my nose, where I'm forced to scrape shave for the first (WTG) pass, the result is *not* close... I only get to my normal DFS+ after a second cross grain pass that allows a low angle of attack.
The only meaningful thing I can say to address the issue of how the SB compares to the OC when used with steep angles, is that neither one is better in this respect in my use, but then again *no* razor works for me when used at the angles you're talking about D: