He'd kinda have to hit them both with it and he hasn't proven himself on par with Fox in speed, IMO.
And this is hardly a curbstomp. I foresee a majority of the SF cast dying to the likes of Volgin, Fortune, Solidus, MGS4 Raiden and so-on.
I mean...MGS' cast has mega-flamethrowers, machineguns usually mounted on fighter planes and that rail cannon or whatever it was Fortune used.
Not to mention Fox's laser arm which succeeded where a Stinger missile couldn't.
The people I can see causing the most problems for SF is Volgin, who is very strong, and with his electricity can kill several at once, Fox, who is like, you know, very fast and shit, Vamp, who is very fast, is a beast up close and far away, and can't f*cking die, Solidus has that suit and is a very good swordsman, Raiden, who is now basically another Fox, and Vulcan, who has a big ass f*cking gatling gun.