Well, with SA, if you know the locations of the 3 emeralds, and then restart, they will be in the same location, making it skill you need, not luck. And with other games/levels where luck seems to be a factor, it really is not. For example, from SA, Sonic's casinopolis may seem to hinge on the luck of pinball, but in reality the way to get a fast time is much less random (collect the dumpster rings). To apply this to the Carnival Night level with the drum (I forget the act) from Sonic 3, it is not based on luck when the drum reaches the point where you can exit-it depends on the timing of your jumps. Take also the Egg-Go-Round from Sonic Advance 2, where you need to keep your character in equalibrium with Eggman (for a short period, anyway) to get more hits. Luck? No. You need to meticulously time when to jump, and determine which direction to move in order to stay on top of Eggman-only slightly luck. Luck is really only the dominating a factor in a few select levels. And on a different point, some levels are really a combination of luck and skill. The luck/skill factor is really just 1 blended element, with skill being the more necessary. So, in short, no.