Hi asbani, in a short answer: YES - The softer the tip the more spin you can get, thus increasing control also. , but, I don't use a super soft tip or a very soft tip because of quickly they wear out and need replacing, I use a Medium that is semi-soft. and still get plenty of spin and cue ball control, I also am such a cheapskate that after a couple weeks of non stop play with the same tip, I will start scuffing the tip between every few shots to make sure it never hardens and I can get maximum life out of it, as I am a hard hitter usually, I can play soft, but I prefer to practice working the cue ball around the table on every shot. ----
--- For a reference, I can draw the cue ball back with a spin fast enough to go the length of the table almost 3 times, not that i'm great or anything, i think it's just after many years i consistently hit the ball square.