It is going to be much more than a couple of wins, most likely 5+ wins and plausibly 10+, the range of outcomes is pretty large. The quote you were responding to was focused on the Grienke trade specifically. As outlined, you start with an estimate of Greinke's WAR, subtract a little for the switch to Betancourt at SS, and subtract a little more for the opportunity cost of Greinke's $13M salary. 5+ wins is on the WAY high side for this move alone. 10+ is just silly. There isn't a 10 win player in baseball (much less a pitcher), even before the downward adjustments. Pegging it at a 2 win improvement is very reasonable. Add a couple more for the Marcum move, but even then I personally don't see it vaulting the Brewers into the playoffs. It vaults them into the .500 range. This is a team that won 77 games last year. You really don't think Pujols gives the Cardinals more than 5 wins a year?