A high - calldown or not

[Kobecarter]

Known players: (for a description of vp$ip, pfr, ats, folded bb, af, wts, wsd or hands click here) 
<font class="small">Code:</font><hr /><pre>Position:
vp$ip foldbb ats pfr
af w$sd wts hands



MP3:
47 50 67 12
0.3 0 13 17



BB:
54 0 43 15
0.4 20 36 26



CO:
23 20 59 19
3.2 64 38 1341



BU:
27 18 33 17
1.4 50 38 158



SB:
49 30 138 20
0.9 50 19 51

</pre><hr />
30/60 Fixed-Limit Hold'em <font color="blue">(6 handed)</font>
Hand recorder used for this poker hand: Texas Grabem 1.9 by www.pokerstrategy.com.

Preflop: Hero is MP2 with Q[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/heart.gif[/img]
<font color="red">Hero raises</font>, <font color="grey">4 folds</font>, BB calls.

Flop: (4,50 SB) 4[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players)</font>
<font color="red">BB bets</font>, Hero calls.

Turn: (3,25 BB) 7[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players)</font>
<font color="red">BB bets</font>, Hero calls.

River: (5,25 BB) T[img]/images/graemlins/spade.gif[/img] <font color="blue">(2 players)</font>
<font color="red">BB bets</font>, Hero calls.

Final Pot: 7,25 BB





Due to what criteria do you decide whether to call down or not? Is this question impossible to answer without specific reads or history? There must be some kind of correct calldown frequency according to optimal play