Toughest bullet in 90 to 100 gr size

[Double Naught Spy]

I have seen a bunch of his videos, and enjoyed every one. I’d get the 90 gr TNTs if they could be found, just based on his liking them. But, Internet search shows that some folks think the Sierra 100 gr HP is tougher than the TNT. Certainly someone on this forum will have tried them, and I trust the word of real Grendelians.

'What does "tough" mean to you. The Sierra 100 gr. HP is "tougher" than the TNT, what would that mean?

I am confused. You are talking about "tough" bullets and includinge v-max, tnt, etc. in the mix, none of which are tough at all.