Blister weighted the Cochise 185 at 2235g when the Bonafide 177 came in at 2280g. The smaller, narrow Bonafide weights more?
Think it was just a heavier than average pair of Bonafide 97s and a lighter than average pair of Cochise 106 as they both should be similar weights in similar lengths. Blizzard has the 177cm Bonafide 97 listed at 2200 grams and the 183cm Bonafide 97 and 185cm Cochise 106 both listed at 2320 grams each.
Not uncommon for the wider skis to use lighter wood cores, less metal or lighter weight fibreglass etc in order to keep the weight from getting too high and flex too stiff for skis biased for softer snow or powder.