Teachers and native speakers will often compliment you and sugarcoat their opinions just to be polite and not to discourage you, or because they don't want to strain their personal relationship with you.
Basically, if you haven't spent several hundred/thousand hours listening to German and practicing especially the sounds your native language doesn't have (like the ch etc.), it's very improbable that your pronunciation even remotely resembles that of a native. If you have, you probably sound pretty good, clearly comprehensible with at most a few slight nuances in your accent being recognizable as foreign, if at all.
That your teacher is actually German is a big plus, that way you at least don't get taught some made up language that's somewhere between English and German, as it is the case with most language classes.
If you want, you could upload a sound file of yourself reading a German text for a minute or so to Mediafire, then I (or some other German) can provide you with an honest evaluation of it.
Also if you meant
http://dis.4chan.org/read/lang/1246940150/ -- half the people in that thread (including the OP) are complete retards, don't take it too seriously.