I believe His rationale is decent GDP numbers, decent ADP numbers and less dovish stance from The Fed.
We now know they are calculation GDP with new metrics.
Depending on how much above or below the 1% number, the perception of tapering will increase or decrease.
IF it's below 1%, the perception will lead into the FOMC meeting with a more dovish approach likely and PMs will pop.
IF the GDP is manipulated to over 1.5%+,PMS will drop.
I think bad is good for PMs this week.
PS: Roller Coaster week though.
Then we have ADP.