On mobile, so I can't tell from the pic, but they look like old, non-oversized z toe sth12s. I personally ride salomon, but that is their lowest end "free ride" toe piece. It would be the same toe piece you would see on a mid range-lower end system ski, just with a higher din and Teflon afd.
What Would Sal Masekela Do?
"They're fake, real Line skis are made in Sealand" - Xeno
Why would you go warden over sth2. The only reason to get the warden is if you use rockered touring soles. Unless the op is in touring boots which I'm guessing he is not he may as well stick with the sth. Not that the warden would not also be great for him it's just he does not need them.
Oh yeah for sure they could work, but they cost a bit more then sth so unless you ride rockered soles and need them you may as well stick to the sth. Also there is only a 13 DIN version the first year, so if your after a higher DIN it will have to be sth for now.
But dont get me wrong the warden is a great binding and I will be using them on my all mnt setup so I can use touring boots or my alpine boots, but for park skis I will keep sth.