I think he’s comparing the 6.5cm guy who brings boxed ammo and gets spanked by the .308 reloading guy.
OP... my vote is the .308... you have a lot more options and much cheaper if you’re not reloading... besides, if you find that you don’t enjoy shooting boxed ammo at over 600 yards, you still have a great hunting rifle with affordable ammo... down the road get yourself a 6.5cm.