I would not be surprised if they were the same blade.
The Gillette Nacet is slightly sharper and smoother than the Gillette Stainless Red & White pack, for example, this is how I keep a record of blades and this is how I rate the blade top is very very sharp, lowest is crap.
Feather Hi-Stainless
<--- Very very sharp
Kai Stainless
Gillette Nacet
Vintage NOS Schick Plus Platinum
Vintage NOS Gillette Bleue Extra
Gillette Stainless (red & white)
Polsilver Super Iridium & Wizamet Super Iridium (both are the same blade)
Gillette 7 O'Clock Black Super Platinum
Gillette Platinum
Gillette 7 O'Clock SharpEdge (yellow)
Wizamet Polsilver Brown Stainless
Gillette Silver Blue
Astra Superior Stainless
Vintage NOS England Wilkinson Sword
Treet Platinum
Astra Superior Platinum
<---- Middle of the road everyday shave
Vintage NOS Gillette Super Stainless (spoiler)
Gillette 7 O'Clock Super Stainless (green)
Perma-Sharp Super
ASCO Super Stainless (orange)
Parker Premium Platinum
Rapira Platinum Lux
Rapira Super Stainless
Rapira Swedish Super Steel
Ladas Super Stainless
Rockwell Swedish Stainless
Gillette Sputnik
Voskhod
<---- This is the low level, not the lowest crap blade