Different in the vague 'unusual' sense, or different in the 'oh, what is that thing?' sense?
And I agree, AutoHotkey syntax gets a bit convoluted at times. It started as a much simpler language and as it was extended over time it got muddled. There is a completely overhauled v2 which has been in development for several years. It is coming slow but as far as I know it IS still being developed.
Still, I think it has some user friendliness advantages over AutoIT, at least from the little I know of AutoIT...