Interesting. Maybe if it's a longer static recurve, and since maybe it happened to be well tuned to your arrows, it was more accurate?
Cool that it works for you.
I find the Toth and Kassai bows rather expensive for just having solid glass limbs covered in leather. But I shot one and it shot pretty good...
I have one of Dave Mead's bows. Still primitive, wide handled, far from centershot, yet pretty fast and quiet. The handle seems wider than the usual in 'horsebows'.. I've had trouble doing what you've got with mine (can you intersect the arrow with the string blur and it goes dead on straight?), but I think if spine tuned and with a good release it should work.
I don't think I'll be as accurate with my Korean bows (short! and long draw..) shooting Korean style with the same ease as shooting a nice longbow or recurve in western style...