It's because you don't want to lose. And all the variables. Fighting someone who does cheap moves, loading about and finding out your match had lag, etc. If you played online with a friend you get no anxiety. You know the person, they most likely have a good connection, and you're pretty positive you can beat them. My advice just do player matches. They don't record wins or losses so who cares if you lose. If you want to jump into rank you'll have to take that chance. Have a plan. If the match is laggy what will you do? I had a match with Mileena and my opponent was lagging. Couldn't hit my combos at all! I said F it I'm not losing. And just kept doing my ball and uppercut most of the match. Cheesy but losing is one thing losing because of bad connection, pain in the ass!