Heller and Mercer working together

I know that we are all aware of the release of [PROTOTYPE] 2.I know were all also aware of what Heller and Mercer can do.They are both infected by the virus created by GENTEK they both lost everything because of them.So why don't they work together?I'd love to see those two work together and rebel against GENTEK.But unfortunetly Heller believes the death of his family is because of Mercer.So now he's PISSED off and wants to kill Alex Mercer.Well people that's all for now.[PROTOTYPE] 2 is going to be sweet :)