The Beast is the only sandwich I've had from Subway this year... The Jersey Mike's version does look vastly superior.
However, Subway has a deal right now to get any footlong for $7.
I get the Beast because it is 33% more meat. Then I pay $3 for double meat. $11 with tax included.
It isn't an exact comparison because JM's giant size is 14-15 inches. But this dude paid $22 for his sandwich and a drink. It looks better but it ain't worth that much.