If you were to take a Tikka T3 Varmit in each of these cartridges, buy or assemble equal cartridges then it would difficult to spot a difference between them.
Hmm, sounds difficult.
Since they don't sell the T3 Varmit in 260 Remington, 7-08 Remington, 6.5x55 Swedish or 6.5x47 Lapua
(NO PRODUCT). (Available in 6.5 Creedmoor.)