The situation is complicated further by the fact that there are (dilithium) warp cores that add significant power, but no matching singularity cores.
For example By using Overcharged / SEP / W->S I got from:
125/100, 59/40, 73/45, 41/15
125/100, 69/40, 75/45, 47/15
a total gain of 18 power.
Yup. taht is the whole point of the topic i made. Trying to point out out Fed/KDF gets these huge power bonuses with mk X warp cores, and they'll only get higher with mk XI and XII yet romulans only get a +5 boost when using the abilities. and +15 if they don't use the abilities. which is still less than a warp core yet romulans get -40 power to start with.