I think getting an opinion in here is far from objective. Dude you got to ask people who've never seen either plane before and do not know anything about the origins either...of course you're asking about asthetics, which is subjective and knowledge based.
The less you know the more likely you'll stick to what you like.
You shouldn't ask ppl in here, no offense. We all know the 747 came first, so that plane has established a rather large fan[antic] base.
Personally, yeah they look different: 747 looks sharper in front and A380 looks like it was diecasted smooth; what do you want from me?
The meaning of life is curiosity; we were put on this planet to explore opportunities.