I was in default in 64 when I didn't hold down 2 and 3 on startup, wasn't I?
But you said "I started up with 2 and 3 held down...."
It also depends on what default is for your MBP; Mactracker says "Architecture 64-bit", but I don't know whether that translates to its "default" boot state.
The new Great Equalizer is the SEND button.
In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire