WinUAE better than my Amigas? Not a chance.
For starters the emulation will never be as accurate as the real thing, particularly sound, which still gets choppy sometimes.
But also WinUAE is just nowhere as much fun to tinker with.
I like messing around with obscure hardware, for instance my A500 has a KCS PowerPC board with a 10.7MHz NEC V30 board in it - just for the heck of it. My A1500 currently has a 486SLC2/50 Goldengate bridgeboard and 5 floppy drives of varying sizes attached to it. Do that in WinUAE! Not that you'd want to - but that's the point. WinUAE is a sandpit to mess around in, but if you want the real thing you have to go out into the jungle....
Then again it probably helps that with my PPC/VoodooIII A4000 and A1XE I'm pretty much covered for fast AmigaOS stuff anyway....!
WinUAE better? No way.