STARS vs Task Force 141 (MW2)
To make this very interesting, the battle site is Baghdad (thought a city infested with terrorists would be good). Both teams get their standard compliment of weapons. The commanders are -
STARS: Chris Redfield & Jill Valentine
Task Force 141: Captain Price and Lieutenant Soap
Who wins?
As much as I like Resident Evil, I think Delta Squad has the advantage.
Most STARS members have only fought against BOWS without guns, they need to walk up close to you to hurt you. While the Delta Squad members have fought enemies with guns, they can shoot you at a distance. With the exception of Chris, Jill, Rebbecca, and Barry most of the STARS squad ended up dead to BOWS who attack you with their limbs.
It generally is much hard to fight against an armed enemy compared to an unarmed BOW, so Delta Squad probably takes it.