I walk to my local climbing gym and the setters mark their routes with some difficulty mark. I will use the European scale.
After some time I noticed, that there are routes of a lower difficulty, like 5c+, that are harder for me than 6b. But for other people with a similar level of technique it's vice versa.
I tried to repeat the same moves and just can't, because in a lot of cases it's like: they grab the hold on the shoulder level, I grab it on the level of my chest; they grab the slopper with a full palm, while I barely fit the half; or they grab the cringes with three fingers, while I can fit only two.
Is it just lack of my technique, or does the difficulty of the route hardly depend on my height and other "sizes"?
I just want to clarify, if this ok not to pass some 6a (while doing 6b), because it's for smaller climbers, or I just need to train harder and pass every possible 6a route :)