Upload & Sell: Off
Gradations are mostly a wash, but gamut's easy: Inkjet wins, hands down, by a mile.
That being said, I'd recommend choosing your print technology by application, not by raw technical specifications. There are things each technology excels at and things each technology does less well. Many types of inkjet media, for instance, don't handle abrasion as well as a glossy c-print. There are a lot of cases (that majority, in my estimation) where that doesn't matter, but when it does, you'd want to choose the printing method appropriately.
A well-prepared file will look good printed via either method. You can even mix and match as you need (and with some motivation, nearly exactly match an inkjet to the smaller-gamut wet lab print if you so desire).