I suppose you ignore ECA, he's just bullshiting.
I would not recommend replacing a WinPC with an A1 right now. At least not if you're not familiar with the software available for the Amiga - you should know what you're getting into...
Ouch. OpenOffice will get ported (you know the story: ..."but that may take a while.."). Additionally Papyrus will be available which is a very decent Wordprocessor (a Windows demo version is available somewhere) and all of the old Amiga stuff (Finalwriter, TurboCalc, WordWorth, AmigaWriter etc.) should work fine (as long as you don't need MS Office compatability.
Pretty good stuff available. No big names and no killer applications, but some very nice and powerful software.
Forget it. If you're into modern 3D gaming, don't buy anything else than a WinPC.