LOL, funny hand. You must have been thinking WTF as you C/R'd and then watched as two other players cold called all-in.
Hmm, I want to play "guess the equities" even though you already gave the hint that the set has negative equity.
Let's see... CO's
![The Ace of Diamonds [Ad]](https://www.pofex.com/images/smilies/Ad.gif)
is going to have a ton of equity from the mere fact that he has the best low draw in a four-way pot. That's going to be worth a ton fourway, he must be the favorite even though his flush draw is dead and you have his bottom two-pair nearly crippled for the high. SB's
![The Queen of Spades [Qs]](https://www.pofex.com/images/smilies/Qs.gif)
is going to be in serious trouble since all he has is the nut-flush draw, but he's up against all kinds of blockers. 9 of the 13 hearts are dead and he's drawing to 4 outs with both the
![The Three of Hearts [3h]](https://www.pofex.com/images/smilies/3h.gif)
and
![The Eight of Hearts [8h]](https://www.pofex.com/images/smilies/8h.gif)
enabling a low. He's totally screwed, lol. UTG+2 has a terrible hand with
![The Seven of Clubs [7c]](https://www.pofex.com/images/smilies/7c.gif)
but he might actually be semi okay just by dumb luck. Even though his flush draw is dead, he does have 5 live outs for his straght for half of the pot and 2 outs for his higher set for half of the pot. Plus, he has some shot at the low if CO gets counterfeited which is worth something. I think he's probably doing relatively okay, but he doesn't "deserve" to have however much equity he has. Then here's the hero... Hmmm if you didn't give away the fact that you have negative equity I would have guessed you had more than your fair share. Your set should be worth a decent chunk of equity as you have to only dodge 4 hearts and then UTG+2's straight and higher set outs... Hmm that's something like 11 outs twice plus other random backdoor straight draws. I'd guess you have close to your fair share, maybe a little less? Here's my best guess...
CO.... Best equity by far... I'll guess around 45%
SB... Totally screwed, worst equity of around 10%
Hero... Since I know it's less than your fair share I'll say ~20%
UTG+2... Somewhere in the middle, maybe 25%