If I may be so bold, I believe the discussion, so to speak ,was referring to the 6.5 Creedmoor, not a modern 6.5x55 SE.
When the CM can deliver a 160 gr bullet to any animal, that becomes another matter. That's the bullet that sets the 6.5 SE far apart from the CM. Even a 140 at 2800 MV out of a modern Swede makes it a viable Elk round, but there are other cartridges that deliver 140 and 160 gr bullets more effectively than even the 6.5x55 .. IMHO