Right its all about personal belief...If I use a particular setting and it works for me, I will go on praising it and on other hand if some one other uses those setting and looses he will criticize it...
If some one has a tall players and he scores a lot of headers he will say height matters in heading while if some one has a small height player and he scores a lot of headers he will say height does not matters...
Its all about personal belief. And how some particular players have performed for you. My AML scores a lot of goals than my AMR, so I belief that AML scores more goals than AMR and so on many things can be quoted on personal perceptions......