Yeah this was before “throwbacks” were really a thing, and Ralph half-arsed it because he didn’t want to drop some coin on new helmets and jerseys for one or two games. The only time period accurate part were the socks, ha!
I believe it was done for the 35th anniversary of the AFL & 75th anniversary of the NFL.
Here’s a good breakdown of the helmets;
http://nfluniforms.blogspot.com/2011/07/throwback-helmet-evolution.html?m=1
“Bills: Fail. Changed only the logo from the charging blue buffalo to a standing WHITE buffalo. Meant to show the 1962-73 logo.”
another breakdown;
https://boards.sportslogos.net/topic/76682-1994-nfl-throwbacks/
“As for the Bills... horrible attempt. Left the helmets red, and instead inverted the buffalo on the helmet from red to white, so that it fit on the helmets. Striping pattern was also off.”