There are so many paintball players on urbandictionary that I thought I would clear a couple things up for people who are actually interested in airsoft. First of all, paintball and airsoft are two completely different games. Paintball is usually much faster paced, and is played on much smaller fields. It tends to have much more of a video game/fps feeling to it. Airsoft is slower paced, and is usually played in the woods, or in buildings (to reenact cqb/cqc scenarios) Paintball guns range from $50 to thousands of dollars depending on the make and the upgrades that you give them. Airsoft replicas range from $10 to thousands of dollars depending on the same factors.
Airsoft uses 6mm plastic pellets, usually weighing between .12 and .3g. the most common weights are .2 and .25g bbs, which are used in most AEGs (automatic electric guns). Paintball uses different sizes and weights of gell filled capsules that burst on impact, leaving a mark.
Airsoft guns do tend to hurt less per shot, but most airsoft guns are fired on full auto, meaning that you almost never get hit just once. Paintball guns are usually semi auto only. Airsoft guns tend to have much more range than paintball guns, as most high end airsoft replicas use a system called "hopup" which imparts backspin to the bb giving it a straight trajectory for longer. Airsoft guns also tend to fire at much higher velocities than paintballs, which means that there is less delay between the bb leaving the barrel and hitting its target. Contrary to popular belief, airsoft guns can leave welts, as the bbs do not burst on impact, and the force is concentrated into a much smaller area, however, airsofters tend to not care weather or not their guns hurt their opponents.
There are no professional airsoft teams, and airsofters want to keep it that way. Because airsoft is based on the honor system, airsoft attracts a different type of player. Airsoft games tend to have little or no cheating. You will hit someone, and they will immediately leave the field. I have never been to a paintball game where there has not been a problem with cheaters.
Airsofters tend to concentrate on the tactical and milsim aspect of the sport, wheras paintballers tend to focus more on the fast and furious action. both have their merits. Airsofters usually wear camo and tactical gear to carry their equipment, paintballers tend to wear jersies and use waist harnesses.
The fact of the matter is, airsoft and paintball are two completely different sports, both of which are fun. paintballers tend to bash on airsofters out of ignorance, many of them have never played an actual game of airsoft; they have shot their friends springer in his backyard and think that that is indicative of the entire sport. You wouldnt want an airsofter to shoot a wal mart 30 dollar pump gun and think that that is all there is to paintball would you?
paintballers say that they would simply not call their hits in a game of airsoft, this is why airsofters dont want you to play with them.