Heavies are nice if your enemy has lots of lrm (and often they do)... but if they have started the bomber spam thing in apperciable numbers... then you prolly need to get some carriers filled with fighters...
When people bomber spam... they often dont have nearly enough flack for their bomber's protection.... and if they do, those flack are not going to generally be near where their bombers are.
It takes micro... but... its possible.
but thats fighters/bombers.
People dont usually get bombers cause you have heavies. people get bombers cause you have cap ships or starbases.
bombers do hurt heavies though, and if they do have shizztons of bombers, dont invest into heavies....
but if they have lots of lrms... heavies are very, very deadly.
Good job finding that bug though.