0 SRT character

By Kaworu, in 2. AGoT Rules Discussion

What happens when an attacking character and a defending character have 0 STR?

Is there resolution of the challenge or 0 STR counts as no attacker and ends the challenge? It is quite important because of Lethal.
The question is the following: a character with 0 STR attacker can not win a challenge. A defending character with 0 STR does not count as opposition. And if an attacker and a defender character of 0 STR can not be a tie because that's who wins the attacker, so no resolution. But if there is no resolution does not apply Deadly.
I've been thinking about it a while but while haa resolution as I think there is no logic and rules are not specific, just say it with 0 STR can not win by attacking.

As long as at least one character is participating in a challenge, it will go to resolution, regardless of STR. Once in resolution, 0 STR on each side means there is no winner or loser, because neither side can win (according to the rule about needing at least 1 STR to win a challenge. An since there is no winner, there is no award for an unopposed challenge.