Yet 2 pair wasn't in my thought process because just a measly .50 sit and go
I donīt see your point there. If it was a .50 SNG, it was very likely that he had called preflop with something like 78,65,54 or even 64.
Even if you dismiss those hands, thinking that your early position preflop raise would be called just by good hands, you have to add as possible starting hands AA, KK, QQ, JJ, 10s, AK, in which you are underdog in everyone except for JJ and 10s. You also have to think that if you opponent called with 77, why he couldnīt have 66, 55 or 44? Too much hands to worry about.
One of the problems with your call was that you put your opponent on a hand that was ideal for you, and you didnīt think in a wider range that could beat you. In the exact situation you were, your opponent held one of your outs, making you the underdog (48%).
There is a point that XD said and itīs very important. You were applying a cash game concept to tournament game. You thought that your EV was positive so you had to call, but you didnīt take in consideration that the EV works in the long run. You were all in in that hand, so there wasnīt long run: if you lost you went out of the tournament without possibilities of obtaining any money afterwards.
I figured the pair correctly, if I was wrong then it wouldn't have been
Itīs great if you figured the pair correctly, but the problem was that you didnīt make the best move with that information. Iīll repeat this: After the flop you were underdog.
Even if you figured that he had for example 10s, if one of those were a diamond you would have been 53% favourite.
With those odds you donīt want to make a call for all your chips on an early stage of the tournament.
Now would I have the same opinion about this thread if I lost all my chips?? More than likely but then again I'd roll that all the time figuring that I'd win 60 times out of 100.
In that situation you had 48% chances of winning, so you would win 48 times out of 100. And remember the very important fact that you canīt follow the EV there, because if you lose you go home and if you win you just have doubled up on an early stage of the tournament, which doesnīt means that youīll get money (you just won chips, itīs not "real" money).
I hope you understood my reasons of why you shouldnīt call in a situation like that (running a race on early stages of a tournament, especially if you are all in), because this is one of the few times were iīm 96.2% sure iīm right.