Medium Part of the Range
Hello teh_colonel_saigon thanks for sharing your hand and thoughts with us. We appreciate it a lot.
Now let's do like Jack the Ripper: for parts.
First I would like to look at the information available:
MP: 120.5 BB (VPIP: 22.68, PFR: 15.46, 3Bet Preflop: 2.38, Hands: 98)
First of all Villain's MP has more than 100 BB which affect our
odds a little. Second his raise is a little bit strange because he is out of position in relation to the table and 2.5x raise seems like Villain's MP is maybe (a big maybe) playing some kind of Small Ball but this is just my personal speculation. Why would Villain's MP elect to give wonderful Odds either for calling or 3bet/Squeeze?
Third: How much in percentage this Villain is opening from MP? There is a great difference if he opens 20% from MP or 10% from MP.
Fourth: The amount of hands played with this Villain is really poor for a serious decision making, only 98 hands played. Also he has a very low percentage of 3bet Preflop, which leads me to the inference that he might have been even more Tighter with this 4bets. (and we know for experience that at 2 NLHE players are almost always 4betting only with AK, AA and once in a while you will find a A5s, A2s. Even KK players are reluctant to go for a 4bet Pot).
Now, to be or not to be, that's the question: Should you call it or fold it?
Well, I don't know if I agree with gustav197poker when he says that you should have made a bigger 3bet size Preflop. If you were from the Blinds I will simply apologize for raising 4x against Regulars and even more versus Whales or Fishes. But you are in the Button, the best position in the game, and usually we re-raise 3bet with a size of 3x with all of our calling/3betting Range.
It is bad to call with pocket Jacks in a spot like this because you have to pray to hit your set or a pretty good
equity, which will not happen very often. The 3bet is the standard movement because here you can win the Pot immediately if the Villain in the MP folds, or you can win the Pot Postflop by C-betting, either by value or by
bluff, because as long as you are the aggressor of the hand you have initiative. When you call there is only possibility of winning.
Now when I got a 4bet with the medium part of my range, versus a barely unknown Regular, which demonstrates by his Stats that he/she is unbalanced I elect to fold 100% of times. Why is that?
A) Could I really go 5bet/Shove/Push/All-in after a 4bet from the EP with the Medium Part of my Range:
for example, QQ-99, AJs-A9s, A5s-A2s, KTs+, QTs+, JTs, T9s, AQo+ (7.84%)
Sorry for my candor, but I don't think so. The reason is that if I call a 4bet with QQ, JJ, TT, I would have a serious trouble time Postflop. This hands would not play very well in a 4bet Pot. If I decide to Push and go 5bet/Shove with QQ, JJ and TT, for example, I would be in the best case scenario in a Flip Coin spot.
We cannot simply call down these hands in Position like Doug Polk does in the YouTube. Because of the rake. Because we are praying for either hit a Set or a Flop with cards below Ace and King.
We cannot apply too much pressure with QQ, JJ and TT if we are not entirely sure of how much this Villain in the MP folds to 5bet/Push. If we had this piece of information we could be easily be 5betting/Shoving with almost the entire range described above (7.84%)
When you have the Medium Part of your Range, such as QQ, JJ and TT, you are not blocking important parts of Villain's Range which may include Aces and Kings.
Final thoughts:
All of that being said, I agree with your decision of folding right on the spot.