Why do people complain about heroes so?  It takes a great amount of skill not to get trucked over when playing covie, you should be delighted that so many fine gentlemen worship heroes or else you wouldn't get to sit and counter them over and over boosting score!  Counter Infantry & Vehicles > Infantry = Heroes. 

*PoR flies in late stage which makes him EASIER to counter.  Flying counters are faster and have way cooler powers (Vampires have the freeze thingy when they are upgraded) So make vamps or wolverines!

In fact vs. a covie you know you're safe making flamers b/c you know they counter infantry and God knows not one successful covie doesn't use his hero.  Play smart and don't fall back, always push forward.