Also sprach Ala Qumsieh:
I am trilingual, but German is not one of the languages I speak,
unfortunately.
Here's my reasoning why I *think* English is more complicated than
German. Please correct me if I'm wrong. Both German and English are
derived from the same origins, and hence are grammatically very similar.
They are lexically similar (and that even to a limited extent only).
German's grammar however has not much ressemblance with that of English.
It's mostly the Latin grammar where nouns have a gender and a casus
according to which they are declined (declination of nouns is something
that has been dropped in most Roman languages whereas German still has
it). Verbs and their treatment obey similar rules as in Roman languages,
only that German just has conditional and indicative mode (and is thus
lacking the subjunctive). Especially when it comes to verbs, English and
German have nothing in common. The result from all that is that German
word ordering is looser than in most other European languages (with the
exception of some Eastern European languages, most notably Russian).
When it comes to learning, German tends to have both a steeper and
longer learning curve than English. While English might have a large
corpus of words, it needs much more practice to build a correct German
sentence. It has to do with the amount of real-time computation that has
to be carried out by the speaker (figuring out the gender of a noun, its
casus in the given context, based on that its specific declination; verb
forms, which are different for each tense, must match the grammatical
person of the subject). Once a sentence has more than a subject and a
predicate (German sentences can be arbitrarily long, quite unlike in
English where a stylistical threshold for the length of sentences
exists), all bets are off when it comes to word order: of all possible
permutations of a list words, a certain percentage is valid of which
maybe 10% really mean what the speaker intended to say. Add or take away
one word, and suddenly the words might need to be rearranged.
English was more influenced by other languages like French and Spanish
due to the larger role of the British empire in history. There are more
countries that speak English, than German, and hence more variations in
spelling, dialect and newly introduced words.
And particularly a lot of simplifications have made it into English
which, as far as I know, has rarely happened to German. Another factor
is that German is mostly spoken by native speakers whereas everyone
nowadays learns English.
One field in which English is arguably harder than German is phonetics.
Seeing a German word written will usually allow you to say it properly
(some exceptions exist but those can be reduced to a few general rules
of exception).
Tassilo