No,those 2 arrows are probably shooting within 10 fps of each other so the difference will be very minimal.
If you can,get an exact arrow weight as well.Actually weighed on a grain scale.
There is a strong possibilty with your bow that the grip style has more to do with the tear than anything.I have a bow that does very much the same thing when I try not to torque it but when I just grab it and fling the arrow,it does good.