Taking on the chip leader...

[BigHef]

Party $50+5 blinds are 50/100

I get dealt AJo. I make it 300 to go from LP with a stack of 4600, Chip Leader calls on the button with 9300, BB calls (stack not important).
Flop JQQ.
Check to me, I bet 700, Chip Leader calls, BB folds.
Turn 6 completes the rainbow.
I check, Chip Leader bets 1000, I call.
River K, I check, Chip Leader checks.

Did I play this scared? Theres a fair way to the money (think there were about 50 left, top 20 paid) and my stack was well above average, Chip Leader had a big lead at this stage.
I strongly considered following through the turn, but although with pretty much no read I had picked up he was involved in a lot of pots through a lot of streets.

Any comments? I'll post the results later.