>>11608697the low energy compared to alken is due to the aromaticity.
you can calculate the energy state, with ab-initio computational chemistry using idk Gaussian and HF/6-31G* you should get an okayish result (at least the trend will be ok) of different energy level, if you toy with it and put EWG and EDG / changing the bonds the aromaticity you should find your answer
hope this help
