back in the early 90's almost everything was testosterone cypionate, didn't find much enanthate except made by Squibb. Now enanthate is more popular. like everyone says, no noticable difference
The difference is all in your mind. I would think the only difference would be if the tests were made by different manufacturers and were not quite dosed as the labels say they were. Then one could say "I made great gains off of company A's enanthate" and "Company B's cyp was slow to make gains". Then this person would have the opinion that enanthate was better than cyp.