I find both knots similar. I tie them almost in the same way. Surgeons loop basically three turn overhand knot. Spider hitch three turns except the three turns go over the doubled line that goes in both directions and then through. (Basically three turns over 4 strands of line) I also tie it as I described, no need for thumb or toothpick. I'm pretty sure it comes out identical, and if you look at pictures on how to do it it makes sense.
They both vulnerable to knot fatigue imo. Both become weaker every time they put under pressure, but are strong at first. Bimini is still a better option, especially seeing these loops are normally the weakest point between reel and fish which makes it probably the most important knot in the entire setup.