No, worst case it's like trying to tell appart l, i, j
Anyway, being a native Arabic, I don't see any inherent difficulty in the writing system.
I only encounter a problem if the font is bad or too small, or a combination of both. 10px in most standard Arabic fonts doesn't work very well.
I don't know if Kanji is readable at 10px, but I personally can't read it at that size. Any native Japanese/Chinese to shed some light?
At least Japanese has katakana & hiragana, though, which have only a few strokes and are quite prevalent in normal writing. I've seen dense walls of tiny Chinese writing that looked positively impenetrable.
I blame it not.... simply not using it everyday :)
I still wonder how those mongolian folks are doing with it. I can read cyrillic just fine, but mongolian is gibberish to me!
Ah well languages! Hate them, love them...
I studied Japanese, and I found that once you learn a Chinese character, you recognize it instantly like a picture. They have unique shapes, and not many are similar enough that you have to peer at it to discern the difference.
Identifying Chinese characters, to me, is like distinguishing the letter "A" from "B"
http://mural.uv.es/ciucama/kanji.gif <= it may well look like gibberish to you, but I'm sure you can notice that they are largely unique, and even if you only look at the 'shape', you can tell the difference.
From what I've seen of Arabic, identifying characters is often like distinguishing "0" from "O" and "l" from "1", or "W" from "VV"
http://www.stanford.edu/dept/lc/arabic/alphabet/images/Arabi... <= disclaimer: this IS gibberish to me, but even so I can notice than many many letters are very similar to others.