Gaming shepard vs chief

I was wonder who you would think would win commander Shepard or master chief any class for Shepard.
2 rounds. Found one Shepard has any armour weapons and or bio tics depending on class and chief has assault rifle magnum and 2 frags
Round 2 no armour full fist fight. They are both a max physical peak
I think Shepard would win round one easy and the second would go to either since they both are at max physical peak and fighting.
Stats
Shepard has extremely powerful shields that can regenerate like chiefs but Shepards armour light and won't protect him much after shield is down and Chiefs will. But Shepard has weapons that are practically plasma that can shoot a supersonic speeds basically. Without armour Shepard is still powerful while chief relies on his armour for protection and strength and speed boosts. Shepard can probably run 20 miles an hour while chief can run at most 35 but when he did he tore his tendons.and at average 20 miles
Shepards omni blade can basically slice through almost all materiAl. Shepard can defeat multiple husks and other indoctrinated aliens with a pistol even when he's practically 90% dead(end of mass effect 3). Chief and Shepard have great reflexes but with arm or chief has a little better reflexes. A flaw in Spartan armour is if the shield is down the Spartan can die frombing shot in the visor they see out of but everywhere else is great defence. And be real if your just s fanboy of just one of these games don't just choose that character because you like that game better