Sorry, genesys, but we'll have to disagree on this one. Personally, I think that even if you just hold one chord and hit variation and fill buttons, you end up with something maybe better than this on a Yamaha. Those Mega voices make an enormous difference to the realism of the guitar and bass parts. Not to mention the vel-switched drumkits.
I'm not looking for normal operation. To be honest, that often masks other problems (glitchy fills and variation changes e.g., remember the Korg issue).
If this is all AFG wants to show, that's fine. Yes, a few changes would have shown whether there are different patterns for maj/min/dim, etc., and how well it transitions between them, but that is usually a function of how well the style is written, rather than the arranger OS itself.
But response to 'late' chords, fill and variation timing issues are squarely on the arranger OS...
But style balance, drumkit balance, EQ issues (on my reference monitors, this had a very tubby bottom) and many other things can be checked out BETTER with the simplest of demos...
Sorry I didn't quite grab what you were saying. You didn't actually articulate that particular point...
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An arranger is just a tool. What matters is what you build with it..!