The WR's for both the New and Old versions of Turbo Force end somewhere in the third loop, so unless there's a bug like in Dogyuun, they seem technically beatable.
Technically, maybe. The problem is that the rank system goes completely nuts after a while, clearing just the first loop will probably require some carefully planned deaths along the way, I don't even want to think about the second loop. I doubt that's one of the "easier" WRs to go after.
I figured there must be a reason why it wasn't ALL'd or counterstopped.
It's rare to find a Japanese record that isn't a clear, but part of the reason is Gamest/Arcadia/JHA put ALLs over scores. Usually that isn't a problem at this level, but I imagine we've missed a number of scores higher than the WRs because they couldn't get the clear.
One other problem with determining WRs in our community are titles such as Raiden, Tiger-Heli, Mazinger Z or Thunder Blaster. BOS and edusword counterstopped Mazinger Z so unless you want to keep track of how much more points they would've gotten after that point you have to acknowledge they got a "WR". For all we know, saucykobold might hold the WRs for Raiden, Raiden II and Raiden DX since his scores are all above 10m. ben.shinobi and Max_FAD cleared some 40 loops to max out their scores in Tiger-Heli etc. You really can't deny any of those scores the "WR status" I'd say.
There are also six players who counterstopped Mars Matrix (what was Takumi smoking?).
As far as listing WR holders for counterstops, as you and I discussed, earliest-to-get-it is one method as is highest chain or EXP, etc. for the tie-breaker. If we go with a Most WRs table, counting counterstops would be one way to give these players credit if they didn't otherwise get their scores listed in the overall listings.
Incidentally, I've always wanted to do a Most WRs that included Japanese players, but a lot of these goofballs use various nicknames (or modified names like SOF-WTN@COKE TOKE OR POKE NOBODY RIDES FOR FREE) that make it hard to tell if it's the same guy.