Well in Fallout Shelter while the T51 and T45 series both improve strength and perception the TIt is never really explained in game, aside from the T60 armor being the 'flagship' armor of the game since its on the box and main menu The only bit of info on the T60 is the loading screen that explains that the T60s were introduced after the battle10,719 Views · Must see $999 West Tek T60 Power Armor ( Fallout 4 ) by Marcus Vinicius 12,760 Views · Related object Battle suit A Fallout inspired model T60 Power Armor by Out Of Hand 723 Views · Related object
Fallout 4 T 60 Power Armor Sixth Scale Figure By Threezero Sideshow Collectibles