I've never done any scientific testing and kept any records as to whether a stick on rest is better than the old matchstick under the rug method. But generally, you will find that those who seek after every ounce of accuracy use stick on rests and plungers. For up close 3d and hunting, either way works. if you might have an arrow fall from an elevated rest just as the deer comes into your shooting lane, you might want the rug rest. That is if you have learned how not to pull the arrow off the rest during the draw
as so many of us have done in the past.
I've hunted and played both ways. Years ago, archery as in field archery was much tougher than todays up close 3d and that is when many began to perfect their arrow flight with elevated rests and plungers and even sights
Your riser with the extra weight built in is probably a product of those years. I have a Root recurve, I think a Range Master with weight and a flat shelf similar to yours that I shot my best 3d score ever with off a stick on elevated rest and 1816 shafts with very light points. It was the 1st time I ever went around a coarse with no wounds and averaged all tens for a 300 score exactly. If I shot an 8, I was able to balance it with a 12. Just one of those days when everything went well.
Jesus replaces the old covenant and speaks to the believer the moral code of God by His Spirit directly to the heart. He is the eternal, everlasting revelation of God to mankind. In Him is both the knowledge of righteousness and the power to live right.