Umm, they need 'upping' a tone or two. IIRC ST protracker v2 could load TCB tracker mods, but the pitch was all shot, so you needed to '+' each track in each pattern then save it as a .MOD.. Only TCB's tracker allowed for longer sample than PT2 allowed at the time, leaving some samples cut short. Oh and the TCB tracker had a varient of the '9XX' command from protracker before the ST version of it did (if that makes sense).
I've done it before and it's a laborious process, However to hear the mods as they were intended, you'll need to go through each pattern and channel and bump it up a tone or two (and it's been over 15 years so I cant' remember the exact setting. Sorry!).
If it helps, the 'pong' song has a sample that is too long for protracker and also has a couple of notes that go beyond protrackers' range. I did convert 'the replicants' tune at some point, though... I'm sure it's on a mod disk somewhere...
On the plus side (but also sadly so), the only decent TCB tracker tunes were actually by The Carebears (so there aren't too many to find and convert). A shame as it was a tracker with potential.