Tip, if a person is talking bad about a game, don't listen to them. Listen to those who are in the game playing on a regular basis and enjoy the game. Coming in or having a bad attitude about the game, won't help you have a good gaming experience. Every game is going to have bugs. If you expect to enter any game new or old to be bug free you don't understand programming. because no matter how flawless you try to make something there will always be a flaw. In this game some bugs can be fixed and some can't. Those who play and enjoy it, play for the sake of playing and understand a loss is a loss and a win is a win, but it isn't the end of the world you got your butt handed to you because you aren't at par or geared to handle certain players. Take the PU vs SW, PUs could take on a SW if they want, but some would rather complain the SW out classes them instead of solving the matter with their character first. Issues you might find are you are not at par on with your opponent by way of level, gear, or skill tree not used to help attack them. The PU could outclass a SW if they so choose. Not all characters are going to be easy to take on every character, some will have an easier time against others and some need to adjust their character to better take on others.
I myself have watched players complain about how unfair their character is easy to be killed against other characters. The funny thing is listening to them complain that their under geared, under level, and under skilled take on a higher level, fully geared, and higher skilled player is going to be a slaughter to them. Some players will hate you for being the weakest player in the game, some try to work with you, and if they are like me will even help you gear up for the next time.
At the end of the day, get to know people in the game and have fun with them. Trying to make a rivalry with others is just going to create a bad taste in your mouth. Play for the sake of playing and fun, not for the sake of winning at all costs. Don't come in the game to cheat, hack, or play the glitches in the game thinking that your skills out class others when really, you are bellow a noob doing any of those tactics to win. But come in play and have fun getting to know others and try not to create a rivalry, it won't do you any good.