I think it's more difficult to learn than most Asian languages. Old style Chinese is probably harder though.
Though, the Chinese-exchange students in my class make it seem easy. They told us that we Americans are creative for having letters, instead of symbols. XD
Some I guess, I'm also studying Japanese, and I'm finding it to be a breeze. Memorizing Kanji is annoying, but you can get it down easy.
I couldn't imagine learning Mandorin/Cantonese(Do I got the spelling right on Mandorin?), let alone Old style Chinese. It just seems so cluttered.
I'm finding Arabic (at least basic Arabic, or whatever it's called) to be very interesting to say the least. The way the letters change as you write and that it's right to left will take some getting used to, but...I dunno. I guess I just get that way at times. Oh well, curiosity's never a bad thing.
Mandarin, but yeah, I see what you mean.
Any European languages you're interested in? I'm not sure if it's true (since I can't test it at the moment), but I read (on Yahoo! news, obviously not a great source) that German was easy for someone who knows English. It also said Spanish was, but Spanish takes a lot of memorizing, and I have memory problems. XD
Chinese is pretty hard yeah for it takes a lot of memorization like Spanish (and yeah I can't remember too well also) in Chinese some word in English has two or three symbols in Chinese that means it, like 水稻=Rice, and I noticed that some Japanese words share some of the symbols of the Chinese symbols and the some of the Japanese symbols have different spelling. Like 三 equals three in both Chinese and Japanese, and 冰mean Ice in Chinese and 氷 means Ice in Japanese. I'm not very good with my language in Chinese, but that's pretty much what I have to share.