But the point is; do not be intimidated by a higher rating. Just because someone is rated a lot higher than you are does not mean they are necessarily better than you are.
Right - it simply means that they perform better than you do. Then again, some might argue that performance goes hand in hand with ability.
I know what you mean, though - my online chess rating is much higher than my live chess rating, although it might just be because I don't play much live chess, and my live rating is what it was over a year ago, before a number of CC games that have increased my online rating. But I'm sure that a large part of the difference can be attributed to my poorer performance under time pressure. Still, I don't think that this implies that I'm "really" not that good a player; after all, they also have world championships for correspondence chess. Who's to say which time controls define "real" chess? Some people mock bullet chess by saying that it's not real chess; I might as well mock conventional OTB time controls and claim that "real chess" is when you can think for days about a single move, when the effect of blunders caused by time pressure is minimized.
When I started playing on chess.com, I was really surprised that my rating went over 1700 because I am really not that good. But, I have learned that I can play at that level if I study every move very carefully. However, I am also capable of making really bad moves if I slack off on my analysis of a single move.
The reason is that I have not really learned out to play at that level, I am getting by with intense analysis. Which is okay. That is the purpose of turn-based, online chess and it fosters learning to play at a higher level. However, it must be supplemented with live chess, to really learn how to visualize the patterns that you can find through analysis in turn-based chess.
I have not been doing that much lately, and my live chess has gotten really terrible. The more I depend on intense analysis, the rustier my skills for quickly assessing a position become.
Anyway, I mention this because, I suspect this is true of a lot of turn-based players at every level. Not all, of course. There seem to be many turn-based players who play pretty much the same as they do in live chess. But the point is; do not be intimidated by a higher rating. Just because someone is rated a lot higher than you are does not mean they are necessarily better than you are. If they are like me, there is a really good chance that they will make some mistakes and you can get them if you are paying attention.