the first and second obviously weren't brought out in full power so why would heHe actually had a chance to stop those 2. Minato however would've been too fast and untouchable due to his old age and reflexes.
it was clearly explained it was infact minatoWe dont even know who the 3rd coffin was lol it was just a stall card that Kishi pulled
FTG is a standalone tech. The performance of it isn't determined by the power level. It's used as is, and is a transportation tech, not an offensive tech.the first and second obviously weren't brought out in full power so why would he