Bloop
no, just because it has similar classes doesn't mean anything, especially since you're listing a ton of classes for one class. THe abilities of those classes are a needed game play factor for it to be fun, Team Fortress probably wasn't even the first to use those abilities. If you want to say things are ripoffs of other things then all of the technological advances of the human race are ripoffs because they have similar qualities to things that inspired them to come to be.