From what Shepard as a biotic has shown, his powers would slow Chief down, but I doubt they'd stop him.
Chief weighs what, a ton or more? None of his powers even maxed out have the ability to move anything like that more than causing Chief to stagger like the more powerful opponents.
And that's only after Shepard gets through the shields. There's no guarantee Chief's armor will even be compromised.
Mass Effect 2 has you fighting one on Therum and it's a lot more realistic. Throw damages it, but doesn't move it. Same for Pull and Singularity, etc..
Agreed with the consensus. Biotic Shep would have his way with the Chief. Vanguard too, by extension.
John could probably take it to any of the other classes, though.
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"The Daemon lied with every breath. It could not help itself but to deceive and dismay, to riddle and ruin. The more we conversed, the closer I drew to one singularly ineluctable fact: I would gain no wisdom here."
As much as i think Master Chief is awesome, the technology in mass effect is far beyond that of halo, mass effect barriers slow mass down to the point of still, barriers also reduce the mass of something from say a tonne to an ounce / gram.... a car would feel like a feather...
also, barriers aren't even weakened by anything other than plasma fueled/energy weapons as they have no mass and bypass the barrier directly to the shields... As for Soldier Shepard, Easier for Chief as no biotic abilities, but even then, Chief with a mere assault rifle having standard projectile weaponry would do utterly nothing to shepards barrier. Chief simply does not have the weaponry required to damage shepard.
The description of some biotics in the canon novels indicates that they can tear up a kinetically barrier'd human in seconds if brought to bear by biotics weaker then Commander Shepard. Hell, we have people like SKarr tossing four ton vehicles sideways, and Gillian crushing people with forklifts with a mere gesture. Gillian may be high-end biotic, above the norm, but Shepard is decidedly the next best thing. Only Jack and Morinth/Samara consistently outperform Shep.
I am a fan of the ME trilogy and I love the character of Commander Shepard, but as badly as it pains me to say it, Master Chief would take this without a doubt.