A bunch of TvZs, and guess where in this build will get nerfed or when the Zerg is going to tell me I'm terrible.
A bunch of TvPs, do the 3rax port if I'm feeling good. Or allin! Sorry.
Random TvTs that balance my matchup history where I have no idea what I'm doing >< so just pull the good safe TvP opener 3rax port.
If you really want to get better at PvT or any matchup, you should find a practice partner because ladder is as you said too inconsistent... Or consistent in the wrong ways. It's certainly what I do, the atmosphere is different too in practice groups.
Despite this discrepancy there are more terrans on the ladder in a large scale, they are just locked up in lower leagues. Which might or might not be obvious.