The Artworks Apple redraw is one of the real-world benchmarks used for the developer (JIT) version of RedSquirrel.
So far it has shown that a 1.6GHz PC can outperform an SA233 *on that limited set of tasks*, and personally I find my [ageing] 1.6GHz PC's "feel" easily as fast as my SA287/VF2.
I would expect that a 2.4GHz A6 could beat a Kinetic/Omega easily, and probably on a lot of tasks, beat an Iyonix (memory, screen, disk etc.) basically because the PC hardware can outperform the Iyonix by miles, so the [thin layer] of emulation wouldn't slow those aspects down very much.
Solaris 8 under VMWare on that same PC actually outperforms my Sun Sparc Ultra10, boo hoo.
I'm sure the Iyonix could be tweaked a bit more - e.g. more development of the graphics card, 800MHz XScale etc; but it's not going to be able to keep up with PC development - jees we're already getting 64-Bit 3.2GHz processors (or quad processors!)
So don't go questionning people's crediblity on things you've not tried, just because you don't like what you're hearing. I for one am not a bit surprised by Stuart's benchmark results.