[Greenskar]

As someone who is in the real life industry of what we are discussing fictionally...

Tony stark wins the contract on a system level

Wayne manages to negotiate the sub-contract in spite of losing the bigger deal.

When it comes to defense I'll take Stark Industries.

As for Lex Corp and Oscorp...they most likely fall into the category of being a NFD (non-franchised distributor) due to their reputations for having their own hidden agendas with their business and straying from contract requirements. They will be looked at as second source with high risk at most.


Also... the OP specifically asked who wins this business opportunity, not who wins in physical combat.