So I've been keeping a track of my performance vs each race throughout this season.
Here's my win percent versus each race
vZ: 91% 21 wins : 2 losses
vP: 70% 21 wins : 9 losses
vT: 43% 9 wins : 12 losses
which is more losses to Terrans than Zergs and Protoss combined and, imo, must indicate that I am doing something very wrong in my TvT, but I can't seem to find the key on my own
it might be that the poor performance in the mirror reflects a weakness mechanically when controlling my units, in which case the more I play the better these TvT results should get, but I dunno.
oh, and you can see the stats here
and copy the spreadsheet and make your own if statistics make you moisten