> In some cases the shovel is better, but you can't effectively compare the two of them.
Too late: the thread you are participating in has already made the comparison from the very beginning. It's like an HN article titled "Local Man uses nuclear-heated shovel to clear snow off driveway" where the first comment is about how JCB and CAT offer superior options...
having worked doing produce sorting ( http://www.compacsort.com/ ) A lot of the cost is the mechanical system. for the very simplest / slow kind of sorting they are doing, computer/vision wise you don't really need too much.
In some cases the shovel is better, but you can't effectively compare the two of them.