one pair, insanely huge pot

I wanted to post one of the interesting hands I played few days back and it is very similar to this hand. It is complete opposite of the advise given here. I will explain my though process along the way

Live game at a casino,1/2 no limt

UTG, UTG+1,Hero have about same amount of chips ( 250-300 range). My read is both are decent tight players

Preflop
UTG raises to $17
UTG+1 calls $17
floded to Button/Hero

$15-$20 is the standard raise with a big pair at this table. First I thought UTG has big pair (AA/KK) and then UTG+1 call somehow made me think he also has a big pair(not AA/KK). When I looked at my hand I had QQ.
Now I immdeiately put UTG+1 on JJ and was pretty sure UTG had AA/KK and I am a big underdog. But instead of folding here I decided to see what flop brings so I called.

Hero calls , blinds fold.

Flop (pot 53) - 3s 5d , 7c
UTG bets $25
UTG+1 raises to $50
Hero calls $50

By now UTG is confused and he is thinking he might be beat. But still calls $25. This made me somewhat more positive that he had KK than AA.

Turn (pot 203) - [3s5d7c]10d
UTG checks
UTG+1 bets $50
I took some time and then call $50. I wanted to give impression that I made a set here.
UTG starts shaking his head unbelievingly but still calls $50.

My heart was racing here as we all are low on chips compared to the pot sige and its difficult to force a fold

River( pot 353) - [3s5d7c10d]7d
UTG checks
UTG+1 checks
I liked both the river and UTG+1's check. I said all-in with all the confidence I can muster ( about 150 )
UTG thinks, thinks and then flods
UTG+1 calls and shows JJ
Pot - approx 650.
After seeing QQ at showdown UTG left the table in disgust

May be it is not possible to play it this way every time but other than HU, I beleive smooth call by last position puts a lot of pressure on the first guy to act.

(I am a rookie learning poker but this play gave me a lot of confidence.)

Now if you compare this play with the hand in this thread, what difference do you see other than one guy already all-in?
If you think you can beat the all-in hand do you continue in the hand?