(Lol reading over this, I hope I don't sound too pompous, it's seriously just the way I notice things 8D; )
How do I say this... yes, I can see the difference in mine. *u*; Not just because it's my style and I know it best, but, I can see a difference in every anime style I've ever seen, even if it's all generic moe, or cute, or big eyes, etc.
The best example I can think of (and I'm sorry to be putting a DA artist on the spot) is ~pcmaniac88 and Noiji Ito's style. They both look RIDICULOUSLY similar in my opinion, but I can still tell them apart.
I think it depends on how much your into the anime style; what you can tell apart, and what you can't. Example, I'm not overly into mech art, or gothic art, or surrealism art, or anything like that, so I wouldn't be able to tell an artist's style apart from another's.