That's a two week period of peak form.
A better comparison than the average IM AGer would be pro cyclists for the spring classics, the top guys will usually manage 2-3weeks of racing well with a 5hr midweek and a 6-7hr monument on the weekend.
T is doing the volume and has the the right coaching to hit a true peak (not just slightly rested) that he can hold for a couple of weeks then rest and rebuild. Expect to see him do that 2 or 3x per year.
There are lots of grinders on the pro circuit - they do a lot of racing but never peak. For some, not peaking means consistently good results (as in, decent placings), for others it means never being quite there. I can think of very few athletes who do what T does in truly peaking for a target block of races. Obviously it works for him.
I would be suspicious of a 6week block of winning against good fields. But two weeks just shows good planning and preparation (not *that* type of "preparation")