I think it sounds right, more or less. There's that 'virtualization' (Virtu Lucid) that is supposed to allow switching graphics on the fly? Or simultaneous functioning so you could game with an ATI or Nvidia card while the Intel one is transcoding/decoding video...
The advantage to the Z68 is only if you get one that includes video output so you can utilize the SB Intel graphics. With that feature, you can also get a -K cpu (e.g. 2500-K) which would then allow for both the integrated graphics and overclocking of the cpu. The H67 boards can't overclock any of the processors or at least, not anywhere close to the same performance.
Here's what I read on another forum:
http://forums.guru3d.com/showthread.php?t=344857
That should answer your question if it's accurate enough.
I think the H67 mobo is good if on a strict budget and you won't ever consider overclocking and if not using a discrete card.
Z68 mobo with video output seems to give the most options but at the most cost. They still seem expensive to me with not much benefit although it's way more versatile.