TV Hulk had a few feats that I think were beyond the others...almost breaking out of the dome of very thick homogeneous titanium steel when the army captured him, and throwing a stump one handed so far and fast he knocked down a helicopter (a stump big enough that the strongmen in the WSM competition likely could barely lift IMO)...he also lifted a big portion of an oil cap (several tons) and a few others.
Steve Austin's bionics I think are probably next...ripping off Bigfoots arm, and ability to break through VERY thick concrete...but overall he's more limited because he's only partially bionic.
Wonder Woman: regularly performed the types of feats Buffy did occasionally
If I had to give them OHOTMU type classifications, I'd say
LF Hulk class 10, maybe a little higher
LC Wonder Woman: 5 ton
Steve Austin: His bionics slightly stronger than WW,but couldn't lift
as much because he's more limited
Buffy: hard to pin down, maybe 3 tons to Diana's 5, maybe as high as
Austin could sustain running at 60 mph. Diana similarly, Buffy showed she could run with a vehicle for a while, but not maintain. Hulk...hard to peg
I say Diana, then Steve Austin, then Buffy, then Hulk
Diana by a mile
Hulk and Austin in the same ballpark
Buffy and Austin
Hulk beats Austin or Buffy, might be even with Wonder Woman
Austin loses a good fight to Diana, as does Buffy
Austin vs. Buffy is where I think it gets interesting, and I think could go either way.
Liked when TV hulk tore a telephone pole out of ground, and used it as a bat to snash a semi with!