Yeah, 7 O'Clock was originally AutoStrop. Rather than Gillette buying them out, it was actually AutoStrop founder Henry J Gaisman that out-patented Gillette to the point that they owned him ... erm, the company! Gaisman took over from King C Gillette as Chairman in 1930. Gillette himself died little more than a year later.
... but yes, 7 Days, AM, O'Clock is a powerful thing to align to.
Personally, I found the Samah 7AM to be very good indeed. I enjoyed it a lot. The Treet 7 Days Platinum however is a different thing entirely - very sharp and consistent. If you wanted a sharper Treet Platinum, this is the one for you.