ya this is a small sample, and no you're not getting killed here. In the BB you're forced to put in 1bb/hand but you're only down .14bb/hand which means you're making back a fair amount here. I think you could probably get your losses closer to BE in the SB. Try completing less in multiway pots. A lot of people overestimate their implied odds on completing because lol pot odds are 7:1 but really, you're going to flop trips llike 73:1 and you're not always going to get any action either.

Completing in the SB will also put you into a lot of awkward spots with one pair type hands because of the very large SPR's.