Weight is distributed over a larger area, so the skis tend not to sink into the snow as much as wheels would. If and when the skis do 'sink' (into powder, for example) their design makes it easier to guide them toward the surface of the snow. Also, the longer the skis, the faster you can travel on them.
he skis better than you
They are very little different. The tires are much more important and real snow tires are far better than all season tires.
Yes snow is better than rain
Powder skis are a special type of ski made for deep snow. They are typically much wider than a normal ski and also oftenly have "twin-tips".
a good general rule is to get skis that are about the same height as you are. The shorter they are, the more control you will have; the longer, the faster they are. If you are a beginner, go with some skis that are shorter than you. Note: this is assuming you are skiing shaped or parabolic skis (any new skis will be this type)
8 lug wheels are better than 5 lug wheels because there is a wide selection of 8lug wheels
yes most definitly.
for better traction!!