Ha - Yes, I can tell the difference between the various guts that I have played with, but I think that is because I have played with them quite a bit and have gotten familiar with them. I only play with the other strings during summer when the humidity would snap the gut so I'm just not as used to them.
I think swing speed and stroke type factor in this as well. For example, those who have a fast swing speed and try to hit monster top spin will probably have a much easier time noticing the differences in various polys than those with other playing styles. I know too much poly will kill my arm so I'll stick with the champagne.
ive been running an experiment with 3 multis
wilson.sensation.tan 16g
wilson.sensation.plus.black 16g
head.reflex.tan 16g
all same tensions
all in similar racquets
ive been having difficulty noticing "A big", difference
its been 3 consecutive days now, with 4 hitting sessions
spin, control, power, all seem equal thus far
the only real difference im notising is the feel in comfort, but its soo small almost negligible
i notised more of a difference by now when using polys
if i did not run this test sidexsidexside , i would not be able to tell them apart
my question to you,, when you compared Nat.Gut,, did you notise "a big", difference?