Global:
-Lighter/more nimble
-Come sharper
-Hold a sharp edge longer
-Can take a more accute/sharper edge
-Harder to sharpen (due to abrasion-resistant steel and convex factory edge)
-Have been known (rarely) to break in two
-Straighter edge is better for push cutting and also effectively lengthens the knife, giving you more flat surface to work with and letting you cut larger/more things
-Can chip if dropped, used on glass/ceramics, or used to cut through bones
- Have metal handle that annoys some people as either slippery or uncomfortable. Said to be more hygienic, though I doubt there's any significant difference.
Wusthof Classic Ikon:
-Heavier, less nimble
-Not as sharp out of the box, and can't hold as acute/sharp an edge
-Easier to sharpen
-Curved edge makes it easier to rock chop
-Won't hold a sharp edge as long
-Most people find the handle comfortable
-More resistant to chipping (though you still shouldn't cut on glass/ceramic)
-Can cut through light bones with no major damage (expect some dulling if the knife is sharp)
-About 50% more expensive than globals from most vendors - asking too much for what it is if you ask me, since it doesn't really perform any better than a forschner (