Well, I truly believe that they didn’t need to alter the valve angle or send into production there so called W5 misdrilled pattern. Edelbrock didn’t need to do this for the Victor head. The could have easily kept the stock valve angle and properly drilled the exhaust holes and still have an excellent head.
The use of Big Block rocker arms aren’t a big deal. The use of Offset rockers are kind of the gimmie for a serious port so it is expected IMO. MoPar has done it since....
1976 when the W2 came out.