If that's what Zimmermann can consistently put up, and Darvish can match it, I'd be a happy camper. Assuming a player peak at 27-29 years old, a rough projection with a 4.3 fWAR baseline would mean a total of 25 WAR of production over a 5 year period (~29 over 6). So, if, say, the posting bid is 50 million, and the contract is 5/50 or even 6/70, the winning team would still net value.