From memory the EQ5 had better PEC, given both where lightly loaded versus their respective carrying capacity. But the EQ6 is designed to carry alot more weight than a EQ5.
So its fit for purpose. If you want to mount heavy gear, or image successful you need the right mount.
Anyone remember this thread comparing each EQ mounts capabilities?
http://www.iceinspace.com.au/forum/s...ghlight=mounts