MAC Original 3 Piece Knife Set

Not my father's MAC knife

Got a compliment from one of the Sous Chefs at the Beverly Hills Hotel about my new MAC knife... having said that, I must say that there is a stark difference between this knife and a MAC knife that my father got in the late 1970s. At the top of the photo is my dad's old MAC knife and the knife recently purchased is below it. Maybe it's the Hershey Bar syndrome in which the price remains the same but the product is smaller. In any case, you can see that besides the hole towards the top of the blade of the new MAC, its length is slightly shorter. However, there is a considerable gap in the girth of the two knives as well as its thickness. Will this affect its ability to slice? I'm still on the honeymoon with this knife so it will be a few weeks until I can make a realistic assessment...