How often do people call your bluff here?

PokerStars - 100/200 Ante 30 NL (8 max) - Holdem - 8 players
Hand converted by PokerTracker 4

CO: 38.61 BB (VPIP: 22.22, PFR: 12.22, 3Bet Preflop: 5.13, Hands: 90)
Hero (BTN): 60.6 BB
SB: 19.47 BB (VPIP: 16.42, PFR: 8.96, 3Bet Preflop: 3.45, Hands: 68)
BB: 25 BB
UTG: 31.52 BB (VPIP: 18.89, PFR: 7.78, 3Bet Preflop: 0.00, Hands: 90)
UTG+1: 43.01 BB (VPIP: 21.33, PFR: 13.33, 3Bet Preflop: 6.25, Hands: 78)
MP: 17.76 BB (VPIP: 28.00, PFR: 28.00, 3Bet Preflop: 44.44, Hands: 25)
MP+1: 24.86 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: -, Hands: 1)

8 players post ante of 0.15 BB, SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 2.7 BB) Hero has A♥ 7♥

fold, fold, fold, MP+1 calls 1 BB, CO calls 1 BB, Hero calls 1 BB, SB calls 0.5 BB, BB checks

Flop: (6.2 BB, 5 players) A♦ 5♠ 6♠
SB checks, BB checks, MP+1 checks, CO checks, Hero bets 3.35 BB, SB calls 3.35 BB, fold, fold, fold

Turn: (12.9 BB, 2 players) 7♠
SB checks, Hero checks

River: (12.9 BB, 2 players) J♦
SB bets 14.97 BB and is all-in, Hero calls 14.97 BB

SB shows 8♣ 7♦ (One Pair, Sevens)
(Pre 29%, Flop 32%, Turn 18%)
Hero shows A♥ 7♥ (Two Pair, Aces and Sevens)
(Pre 71%, Flop 68%, Turn 82%)
Hero wins 42.84 BB

I didn't want to isolate it with A7s, and of course my limp is questionable, but if this is how the party turned out I'd like to analyze it.
I gave the opponent the following rank: 76s,87o,76o,KsJs,KsTs,Ks9s,Ks8s,QsJs,QsTs,Qs9s,Qs8s,JsTs,Js9s,Js8s,Ts9s,8c7c,8d7d

Interestingly, the flopzilla says it has 53% equity against this range.