You are indeed losing way to much from the blinds. You c-bet from SB is definitly to high since you will get floated or raised in this spot like every time. No one folds to cbet bb vs sb enough for your bluffs to be profitable. You shouldn't be losing more then -25 in sb and -35 in the BB or something like that. If your losing more then that you definitly have leaks. You also have to know that you have no sample size at all for the blind play. Just 2 big pots that you got sucked out on would make the difference. You really shouldn't be checking your position stats before you have at least 15-20k hands for each position.
3-bet defence range like mentioned really depends on the 3-bet % of the villan. You really cant call much when your OOP. When your on the CO/BU you can call a lot if your comfortable playing 3-bet pots. If your not and you don't know what to do in spots with certain hand range then your better off folding. It also really depends on how well you know your opponent and his tendecies, how much he barrels or if his one and done really helps a lot. Against unknowns calling 3-bet can be pretty difficult. You should watch some video's on how to play 3-bet pots.
Also in case you call AJ or KJ KQ type of hands vs 3-bet then you have to know preflop if your willing to stack off with TP. You really cant fold TPGK in 3-bet pots. There are so many bad regs that call KQ or AJ preflop and then don't know what to do when facing #2nd and #3rd barrel and end up tank callin every time. Basically if your not willing to go broke with KQ on KJ2 type of board then you have to fold it preflop.
There's really a lot to know about calling 3-bets. Leatherass made a nice video series about playing 3-bet pots when calling 3-bets that you really should check out.