This game is a lot different from triple draw 2-7, more than i expected at least. Here i think is my best case scenario(assuming villian is never attempting a snow here or has a worse 3 card that he is barrelling). This also assumes a near perfect dead card scenario(he doesnt have any of my outs for a better three card etc)
Badugi sim, 100000 trials, 1 draw:
Dead cards: 9
Q
4
Hand 0: 7
4
2
-- : EV
24.5% - WIN/LOSE/TIE %: total 24.5/75.5/0.0 - badugi 21.0/2.3/0.0 - 3 cards 3.5/73.2/0.0 - 2 or 1 card 0.0/0.0/0.0
Hand 1: A
3
5
-- : EV
75.5% - WIN/LOSE/TIE %: total 75.5/24.5/0.0 - badugi 18.7/2.3/0.0 - 3 cards 56.8/22.2/0.0 - 2 or 1 card 0.0/0.0/0.0
So i guess on the turn id be getting 5.7 to 1 and need 3 to 1 to call so I could just call here pretty profitably and then fold river unimp.