i don't know what he means specifically but here's what I know about the tps-tec:
after, say, a regular tps goes above 3.0, the tps-tec would send a high voltage to the ecm to command power enrichment mode. So effectively with the TPS-Tec, the ECM thinks you have the throttle matted at anything above 3/4 throttle (i'm guessing here).
In my opinion, there isn't a *need* for the tps-tec or anything to be gained by it if all you're doing is WOT runs... as long as your tps sensor kicks the ECM into power enrichment mode, you're good.
However, for normal street driving, the tps-tec can be kinda cool, it'll give ya a lot better 3/4 throttle power, without having to open the throttle right up, which some of us would like to be able to do.
HTH
Dave