Its only fair since techs take a ridiculously long time, every other variation of civ4 bts has a MUCH more relatively even iconstruct/itrain compared to iresearch, except this mod which is/was totally out of balance in my opinion and im super glad Is612 is realising this. Having a 3:1 unit/building to tech cost is virtually non existent, its more like 1:1 or 1.5:1, c2c has had well over a 3:1 ratio when you include the per era reductions in tech produced.
Take eternity for example it was 750 itrain compared to 2500 research, that is a 3.3:1 ratio and that is not even taking into account the per era tech penalties. The ancient penalty to tech research is 60 - meaning the ratio was like 5.3:1 actually it was more like 5.66:1, totally disproportionate if you ask me. Now in ancient era including the tech penalty the ratio is around 2.66:1 - 2.83:1, much better.
Take eternity for example it was 750 itrain compared to 2500 research, that is a 3.3:1 ratio and that is not even taking into account the per era tech penalties. The ancient penalty to tech research is 60 - meaning the ratio was like 5.3:1 actually it was more like 5.66:1, totally disproportionate if you ask me. Now in ancient era including the tech penalty the ratio is around 2.66:1 - 2.83:1, much better.