i didn't find german hard to learn/pronounce whatsoever. swedish isn't too bad either. i can speak norwegian/danish but it sounds kinda derpy, although i know especially in norway depending on the region you're in the dialects sound very different, so maybe somewhere my pronunciation would be considered acceptable. at the very least, i'd say a native speaker could probably understand what i'm saying.
spanish and finnish are the two i've found most difficult, mainly because i suck at alveolar trills (the "rolled r" sound), and at least in finnish i know being unable to do these is quantified as a speech impediment.
obviously i've only grown up in an english culture/environment, so i can't say for sure whether or not i've had a disadvantage when it comes to learning languages, however i've just been doing it out of interest. i don't claim to be perfect, but i enjoy improving.