check Wang's stats and Marquis's career numbers. He's in the same ballpark
Sorry HalfSmokes, but I do not see this the way you do.
In terms of IP, Marquis has an edge (190+ 5 of last 6 years for JM, 1 for JW), but it is in the ballpark if you drop the cut to about 160 IP. Washbrun is a fly ball pitcher while Marquis is a GB pitcher. The purpose of the Marquis signing was innings eater / mentor for groundball, pitch to contact righties. Washburn fills one of those roles, not as well as Marquis.
Wang blows him away in terms of FIP, ERA, xFIP, HR/9, if you throw out last year. Yes, Wang is an injury risk, but he has much higher upside than Washburn. Different type of signing - risky / upside v innings eating barely average filler.