Keeping in mind that Diamond Archery is owned by Bowtech...Diamond like many other top brand spin off brand names [like Mathews has Mission etc] are usually quaility bows but with less bells and whistles...so they are more affordable...
The parent company will usually have the top of the line features hence more expensive...
So the same bow ...one branded Bowtech the other Diamond...expect the Bowtech to have better quailitys and features...
Although they look alike some of the features may be a roller guard on parent company and just a simple slide guard on the spin off...
Aircraft-grade 7075 aluminium alloy cams and idler wheels on parent...lesser grade aluminum or maybe even space age nylon cams on other lesser models
Extreme machining on parent risers...less on spin off...etc
Neil